Question

3. Consider the function y = x^2 + 4x – 4.

(a) What is the vertex of the function? Show your work.
(b) What is the equation of the axis of symmetry? Explain how you know.
(c) What is the y-intercept? Explain how you know.

Answer 1

a) (-2,-8)

b) not sure :(

c) (0,-4)

Explanation:

To find the vertex rewrite in vertex form and use this form to find the vertex (h,k). To find the y-intercept, substitute in 0 for x and solve for y.