Question

Find the Solution of the equation 3x+4y-12=0. The options are
(a) (8,3)
(b) (-8,3)
(c) (8,-3)
(d) (-8,-3)
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Answer 1

Step-by-step explanation:

To find the solution just substitute the options and see which option matches

3x + 4y -12 = 0

3x + 4y = 12

using option (a) (8,3)

substitute x = 8 and y = 3

3×8 + 4×3

24 + 12

36 which is not equal to 12

so (a) is incorrect

using option (b) (-8,3)

substitute x = -8 and y = 3

3×(-8) + 4×3

-24 + 12

-12 which is not equal to 12

so (b) is incorrect

using option (c) (8,-3)

substitute x = 8 and y = -3

3×8 + 4×(-3)

24 - 12

which is equal to 12

so (c) is correct

Correct option = (c) (8,-3)