The vertex-form equation is
y = a(x+1)² -16
Putting in the y-intercept values, we have
-15 = a(0+1)² -16
1 = a . . . . . . . . . . . add 16
Then the x-intercepts can be found where y=0.
0 = (x+1)² -16
16 = (x+1)²
±4 = x+1
x = -1 ± 4 =
{-5, 3}
Answer:
Subtraction and Division
Step-by-step explanation:
2x+8=9
2x+8-8=9-8
2x=1
x=1/2
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Step-by-step explanation:
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