Question

The parabola defined by the equation below opens in which direction?

y = 2.5(x - 3)^2 + 5


A. Up
B. Down
C. Right
D. Left

Answer 1

if \(a>0\) it opens UP
if \(a<0\) it opens DOWN

Answer 2

it opens up??

Answer 3

y = a(x - h)² + k

and like @yummydum has stated....

if a > 0, it opens UP
and if a < 0, if opens DOWN

2.5 is your 'a' so it opens ...?

Answer 4

UP,UP!!

Answer 5

That is correct!