Answer:
C) (1, 12)
Step-by-step explanation:
You can rewrite the equation in vertex form:
y = -4(x^2 -2x) +8 . . . . . factor the leading coefficient from the first two terms
y = -4(x^2 -2x +1) +8 +4 . . . . . add the square of half the x-coefficient inside parentheses (-4)((-2/2)^2) and its opposite outside parentheses (-(-4)).
Now, the equation can be written in vertex form.
y = a(x -h)^2 +k . . . . . . . . . has vertex (h, k)
y = -4(x -1)^2 +12 . . . . . . . . has vertex (1, 12)
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Comment on the problem
The typewritten form of the equation seems to have a missing leading minus sign. Its vertex is (-1, 4), so "none of the above."
