Question

1
19. Solve graphically: x-2y =-7 and 4x+3y= 5​

Answer 1

Answer:

Explanation:

x-2y = -7 -----------(1)

4x+3y = 5 ---------(2)

Multiplying equation(1) by 4, we get

[x-2y = -7]×4

4x-8y = -28 ------(3)

Subtracting equation(2) and (3), we get

 4x+3y = 5

-[4x-8y = -28]

------------------

-5y = 33

∴y = -33/5

Substituting the value of y in equation(1), we get

x-2×(-33/5) = -7

or, x+66/5 = -7

or, x = -7-66/5

or, x = (-35-66)/5

∴x = -101/5

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