Answer:
4, 1, 6.
See explanation
Step-by-step explanation:
You are given the equation
First subtract from both sides:
and multiply the equation by -1:
Now multiply (1) by 2:
At last, divide by
The radius of a circle is 9cm what is the length of its diameter?
2 answers:
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Answer:
(-1, 6)
Step-by-step explanation:
A graphing calculator shows the vertex to be (x, y) = (-1, 6).
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You can also find it by putting the equation into vertex form.
y = -2(x^2 +2x) +4
y = -2(x^2 +2x +1) +4 +2(1) . . . . . add 1 inside parens; the opposite outside
y = -2(x +1)^2 +6
Compare to ...
y = a(x -h)^2 +k
and you see a=-2, h=-1, k=6
The vertex is (h, k) = (-1, 6).
