Question

Graph the function f(x) = (x + 1)(x – 5). Use the drop-down menus to complete the steps needed to graph the function. Identify the x-intercepts: (–1, 0) and (5, 0) Find the midpoint between the intercepts: (2, 0) Find the vertex: Find the y-intercept: Plot another point, then draw the graph.

Answer 1

The Vertex is (2,-9)
and the y-intercept is (0,-5)

Answer 2

Vertex = 2, -9
Intercept = 0, -5

You can find this by distributing the parenthesis and then finding the vertex using -b/2a.