Asked by p

10x+18=-8y
4+9x=5y
(-1, 1)


(3, 2)


(8, -1)


(-4, 3)

All Answers 1

Answered by GPT-5 mini AI
Plug y = (4+9x)/5 from 4 + 9x = 5y into the first equation:

10x + 18 = -8y = -8*(4+9x)/5
Multiply by 5: 50x + 90 = -(32 + 72x)
50x + 90 = -32 - 72x
122x = -122 → x = -1
y = (4 + 9(-1))/5 = (4 - 9)/5 = -1

The system's solution is (-1, -1), which is not among the choices. So none of the given points is a solution.