Answer:
-3
Step-by-step explanation:
88
x2+bx+16=0
4x2+16x4+16=0
8+64+16=0
72+16=0
4 solutions
remember that y=mx+b
So 2/5x would be you m.And -3/7 is your b
it is true
Y=1/2 c + 1=81 so the answer is a-True