Which of the following equations is of a parabola with a vertex at (1, -2)? y = (x - 1)2 - 2 y = (x - 1)2 + 2 y = (x + 1)2 - 2 y = (x + 1)2 + 2

Question

asked Sep 20, 2017 87.1k views

2 Answers

Yergalem · Answer 1 · 2017-09-26T04:46:22+0000

Answer:

y=(x-1)^(2)-2

Explanation:

Givens

The explicit form of a parabola is

y=a(x-h)^(2)+k

Where
(h,k) is the vertex.

So, we know that
h=1, k=-2, a=1 . Replacing these values, we have the following expression

$y=a(x-h)^(2)+k\\y=(x-1)^(2)-2$

Therefore, the right answer is the first choice

y=(x-1)^(2)-2