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The minimum of the graph of a quadratic function is located at (–1, 2). The point (2, 20) is also on the parabola. Which function represents the situation?

A) f(x) = (x + 1)2 + 2
B) f(x) = (x – 1)2 + 2
C) f(x) = 2(x + 1)2 + 2
D) f(x) = 2(x – 1)2 + 2

User Edhedges
by
8.4k points

2 Answers

2 votes

Answer:

C

Explanation:

:V

User Marshall Thompson
by
8.1k points
5 votes
so then tat is the vetex

y=a(x-h)²+k
(h,k) is veretx

(-1,2)
y=a(x-(-1))²+2
y=a(x+1)²+2

(2,20) is a point
sub
y=20 when x=2

20=a(2+1)²+2
20=a(3)²+2
20=9a+2
minus 2 both sides
18=9a
divide both sides by 9
2=a


y=2(x+1)²+2


C
User Tim Ayres
by
8.7k points

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