Question

Find the y-intercept for the graph of the quadratic function.

Answer 1

y + 4 = (x + 2)^2

Answer 2

ok, so the y intercept is when x = 0 right. so make x equal 0 and it becomes quite simple.

Answer 3

Hah its not simple to me.
How would I make x equal to 0?

Answer 4

replace x with the number 0. solve for y. that gives the (0,y) plug what you get for y into the second value of the ordered pair to get the ordered pair of the y intercept point.

Answer 5

http://www.wolframalpha.com/input/?i=y+%2B+4+%3D+%28x+%2B+2%29^2+

Answer 6

So its -4,

Answer 7

ok,

we start with
y + 4 = (x + 2)^2

// then we assume x = 0 so
y + 4 = (0+2)^2
y+4 = (2)^2
y + 4 = 4
y = 4-4
y = 0

so the y intercept is at (0,0)

Answer 8

Got it