Question

What is the focus of the parabola y = 1/8 (x + 2)2 + 4 ?

Answer 1

@sasogeek

Answer 2

I know I messed up earlier somewhere because I got (2, -2) it doesn't seem correct.

Answer 3

@Ashleyisakitty

Answer 4

Try this page. http://www.purplemath.com/modules/parabola.htm

Answer 5

By focus do you mean the axis of symmetry?

Answer 6

btw, when something in a mathematical equation gets sqaured it used the "^" sign for... for you example it would look like y = 1/8 (x + 2)^2 + 4

Answer 7

anyway, the axis of symmetry is -2, 4. IF that is what you're looking for.

Answer 8

You'll want to put your equation in what purplemath calls "conics form"

Answer 9

@Ashleyisakitty An axis of symmetry is a line, not a point...in this case, it's at x=-2. You found the vertex.

Answer 10

(–2, –2)

(–2, 6)

(2, –2)

(2, 6)

These are my answer choices. But wouldn't it need to be minus 4 instead of plus 4 to be 2,-2

Answer 11

I got 2,-2 the first time but idk where I messed up