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Find the equation of the line which is equidistant from parallel lines 9x + 6y - 7 = 0 and 3x + 2y + 6 = 0.

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Re-writing the equation of lines in the form y=mx+c where m is the slope and c is the y-intercept. LINE (1) 9x + 6y = 7 taking 9x term to RHS, dividing by 6 on both sides and then after simplifying we get, y=(-3/2)x + (7/6) The first line has a y-intercept of (7/6). Similarly, LINE (2) 3x+2y...
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Re-writing the equation of lines in the form y=mx+c where m is the slope and c is the y-intercept. LINE (1) 9x + 6y = 7 taking 9x term to RHS, dividing by 6 on both sides and then after simplifying we get, y=(-3/2)x + (7/6) The first line has a y-intercept of (7/6). Similarly, LINE (2) 3x+2y = -6 taking 3x term to RHS, dividing by 2 on both sides and then after simplifying we get, y = (-3/2)x - 3 The second line has a y-intercept of (-3) For both lines slope equal to (-3/2). The slope will be same for the new line as well. From this it is clear that the required line should have a y-intercept, which is exactly half way from these two y-intercepts. The distance between these two intercepts = [(7/6) - (-3)] = [(7/6)+3] taking LCM = [(7 + 18)/6] =25/6. Half way distance between them is thus = (25/6)*(1/2) = 25/12. To find the y-intercept of the new line, which let us call c' we have 2 ways. Either Subtract 25/12 from 7/6 or Add 25/12 to -3 NOTE:- Both will give the same answer for finding c'. Let us check both ways c' = (7/6) - (25/12) taking LCM c' = (14-25)/12 c' = (-11/12) case 2 c' = 25/12 + (-3) taking LCM c' = (25-36)/12 c'= -11/12. Thus equation of line parallel to the above 2 lines will have slope = (-3/2) and y-intercept = (-11/12). This gives us y= (-3/2)x - (11/12) multiplying by 12 on both sides, 12y = (-18)x -11. Bringing all terms to LHS we get 18x+12y +11 = 0. Ans read less
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1st line=9x+6y-7,=>6y=-9y+7=> 6y=- 9x + 7=> y=- (3/2)x + (7/6) ..... (1) Line (1) has a slope=m = - 3/2 and y-intercept = c1=7/6 2nd line : 3x + 2y + 6=0 => 2y=- 3x - 6=> y = - (3/2)x - 3 ........ (2) Line (2) has a slope = m = - 3/2 and y-intercept = c2 = - 3 A line equidistant...
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1st line=9x+6y-7,=>6y=-9y+7=> 6y=- 9x + 7=> y=- (3/2)x + (7/6) ..... (1) Line (1) has a slope=m = - 3/2 and y-intercept = c1=7/6 2nd line : 3x + 2y + 6=0 => 2y=- 3x - 6=> y=- (3/2)x - 3 ........ (2) Line (2) has a slope=m = - 3/2 and y-intercept = c2=- 3 A line equidistant from the two parallel lines is a line parallel to both and mid way between the two Slope of the 3rd line=m = - 3/2 y-intercept of the 3rd line=c = (c1 + c2)/2 = {(7/6) - 3}/2 = - 11/12 Hence the eqn. of this 3rd line is : y=mx + c=> y=- (3/2)x - 11/12 => 12y=- 18x - 11=> 18x + 12y + 11 = 0 read less
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Answers Home All Categories Arts & Humanities Beauty & Style Business & Finance Cars & Transportation Computers & Internet Consumer Electronics Dining Out Education & Reference Entertainment & Music Environment Family & Relationships Food & Drink Games & Recreation Health Home & Garden Local Businesses News & Events Pets Politics & Government Pregnancy & Parenting Science & Mathematics Social Science Society & Culture Sports Travel Yahoo Products International About Science & Mathematics > Mathematics Next Equation of line equidistant from parallel lines 9x+6y-7=0 and 3x+2y+6=0? Best AnswerAsker's Choice Dambarudhar answered 3 years ago 1st line : 9x + 6y - 7=0 => 6y=- 9x + 7=> y=- (3/2)x + (7/6) ....... (1) Line (1) has a slope=m = - 3/2 and y-intercept = c1=7/6 2nd line : 3x + 2y + 6=0 => 2y=- 3x - 6=> y=- (3/2)x - 3 ........ (2) Line (2) has a slope=m = - 3/2 and y-intercept = c2=- 3 A line equidistant from the two parallel lines is a line parallel to both and mid way between the two Slope of the 3rd line=m = - 3/2 y-intercept of the 3rd line=c = (c1 + c2)/2 = {(7/6) - 3}/2 = - 11/12 Hence the eqn. of this 3rd line is : y=mx + c=> y=- (3/2)x - 11/12 => 12y=- 18x - 11=> 18x + 12y + 11 = 0 read less
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Convert them in one form by 3 X (eq. 2) i.e. 9x + 6y + 18 = 0 , now the value of c for the line equidistant from both shall be (18 - 7 ) / 2 = 11/2
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1st line : 9x + 6y - 7=0 => 6y=- 9x + 7=> y=- (3/2)x + (7/6) ....... (1) Line (1) has a slope=m = - 3/2 and y-intercept = c1=7/6 2nd line : 3x + 2y + 6=0 => 2y=- 3x - 6=> y = - (3/2)x - 3 ........ (2) Line (2) has a slope = m = - 3/2 and y-intercept = c2 = - 3 A line equidistant...
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1st line : 9x + 6y - 7=0 => 6y=- 9x + 7=> y=- (3/2)x + (7/6) ....... (1) Line (1) has a slope=m = - 3/2 and y-intercept = c1=7/6 2nd line : 3x + 2y + 6=0 => 2y=- 3x - 6=> y=- (3/2)x - 3 ........ (2) Line (2) has a slope=m = - 3/2 and y-intercept = c2=- 3 A line equidistant from the two parallel lines is a line parallel to both and mid way between the two Slope of the 3rd line=m = - 3/2 y-intercept of the 3rd line=c = (c1 + c2)/2 = {(7/6) - 3}/2 = - 11/12 Hence the eqn. of this 3rd line is : y=mx + c=> y=- (3/2)x - 11/12 => 12y=- 18x - 11=> 18x + 12y + 11 = 0 read less
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Solution: 3x +2y +6 = 0 can be rewritten as 9x +6y+18=0 Equation of any line equii distance from both the given lines is 9x + 6y +( 18-7)/2=0 9x +6y +11/2=0 (or) 18x +12y+11 = 0 is the required equation.
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The parallel lines are 9x + 6y - 7 = 0 and 9x + 6y + 18 = 0. Let say the line parallel to both lines and equidistant from them be 9x + 6y + d = 0. Hence, d + 7 = 18 - d (applying the distance formula between two parallel lines) d = 11/2 So the required line is 9x + 6y + 11/2 = 0 or, 18x +...
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The parallel lines are 9x + 6y - 7 = 0 and 9x + 6y + 18 = 0. Let say the line parallel to both lines and equidistant from them be 9x + 6y + d = 0. Hence, d + 7 = 18 - d (applying the distance formula between two parallel lines) d = 11/2 So the required line is 9x + 6y + 11/2 = 0 or, 18x + 12y + 11 = 0 read less
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54x + 36y +11=0
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18x + 12y + 11 = 0
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1st line : 9x + 6y - 7=0 => 6y=- 9x + 7=> y=- (3/2)x + (7/6) ....... (1) Line (1) has a slope=m = - 3/2 and y-intercept = c1=7/6 2nd line : 3x + 2y + 6=0 => 2y=- 3x - 6=> y = - (3/2)x - 3 ........ (2) Line (2) has a slope = m = - 3/2 and y-intercept = c2 = - 3 A line...
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1st line : 9x + 6y - 7=0 => 6y=- 9x + 7=> y=- (3/2)x + (7/6) ....... (1) Line (1) has a slope=m = - 3/2 and y-intercept = c1=7/6 2nd line : 3x + 2y + 6=0 => 2y=- 3x - 6=> y=- (3/2)x - 3 ........ (2) Line (2) has a slope=m = - 3/2 and y-intercept = c2=- 3 A line equidistant from the two parallel lines is a line parallel to both and mid way between the two Slope of the 3rd line=m = - 3/2 y-intercept of the 3rd line=c = (c1 + c2)/2 = {(7/6) - 3}/2 = - 11/12 Hence the eqn. of this 3rd line is : y=mx + c=> y=- (3/2)x - 11/12 => 12y=- 18x - 11=> 18x + 12y + 11 = 0 read less
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Dear friends, Please correct me in case I am wrong. I your opinion , what should be the maximum number of students in a coaching class, so that each student can have maximum dedicated time from the attending teacher in the classroom. In present days, cost and time of coaching / tuition matters a lot . The same will be demontrated by the following two examples : Example 1 : Suppose a student pays Rs. 4000/= per month ( 26 days in a month , excluding Sundays ), One hour per day , number of student is only one, then cost of coaching per minute works out to (Rs. 4000/=X 1 Student )/(26 days X 60 min/day ) = Rs.2.56 per min. cost and he will get dedicated time of 60 min. each day to carry on his studies. Example - 2 : Suppose a student pays Rs. 2000/= per month ( 26 days in a month , excluding Sundays ), One hour per day , number of student is 30 in a class, then cost of coaching per minute works out to (Rs. 2000/=X 30 Students in a coaching class ) / (26 days X 60 min/day ) = Rs.38.46 per min. cost and he will get dedicated time of only two min. each day for his studies. The above examples shows that though the monthly fees paid by each student is just half ( Rs. 2000/= see example -2 ) in case of classroom type of coaching as compared to the individual coaching ( Rs. 4000/= see example - 1 ), but on the other side cost of coaching per min. based on true dedicated time is 15 times higher in case of classroom type coaching with mass students than single student coaching. These can be however extrapolated for any number of students in a coaching class. As a result the speed of learning process of a student will be about fifteen times slower in classroom type coaching having mass students in a class ignoring the other factors. However, it may be the choice of the students and parents which option is better for them ? Regards, Sudhansu bhushan Roy.
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