Question

Y = -8x - 3
x +y = 7
Is (3, 4) a solution of the system?

Answer 1

No

Explanation:

x + (-8x - 3) = 7

x -8x - 3 = 7

-7x = 10

x = -10/7

y = -8(-10/7) - 3

y = 80/7 - 3

y = 59/7