Use a graphing utility to graph the quadratic function and find the x-intercepts of the graph. Then find the x-intercepts algebraically to verify your answer. y = 4x^2 + 11x − 20

Question

(x,y) (smaller x-value) =

(x,y) (larger x-value) =

Answer 1

Hello, Aerin,

y = 4x² + 11x -20

Factor the equation to:

y = (x+4)(4x - 5)

There are two x intercepts: x = -4, and x = 4/5

Bob