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Question

Determine the point on the graph of the linear equation 2x+5y=19, whose ordinate is 112 times its abscissa.

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Solution

Let the abscissa be a

Then ordinate =32a

New coordinates of point is (a,32a)

Given that is a point on line 2x+5y=19

now

2(a)+5(32a)=19

2a+15a2=19

4a+15a=38

19a=38

a=2

abscissa =2

ordinate =3(2)2=3

the required point(2,3)

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