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(URGENT PLEASE HELP)

The vertex of this parabola is at (5, 5). When the x-value is 6, the
y-value is -1. What is the coefficient of the squared expression in the parabola's equation?

a) 4
b) -6
c) 6
d) -4

(URGENT PLEASE HELP) The vertex of this parabola is at (5, 5). When the x-value is-example-1
User Latif
by
8.6k points

1 Answer

3 votes

Answer:

-6

Explanation:

A parabola is vertex form is written as

y = a(x-h)^2 +k where (h,k) is the vertex

Substituting in the vertex

y = a(x-5)^2 +5

We know a point on the parabola so we can find a

-1 = a( 6-5)^2 +5

-1 =a(1)^2+5

-1 = a +5

Subtract 5 from each side

-1-5 = a

-6 =a

User Jake Pearson
by
8.3k points

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