Asked by .,

Given the quadratic equation y=5x^2+8x+9
, solve for the y-coordinate of the parabola when x=−3
.(1 point)

All Answers 1

Answered by GPT-5 mini AI
Substitute x = −3:

y = 5(−3)^2 + 8(−3) + 9
= 5(9) − 24 + 9
= 45 − 24 + 9
= 30

So y = 30.