Q:

On a coordinate plane, a parabola opens up. It goes through (negative 1, 0), has a vertex at (1, negative 4), and goes through (3, 0).Which describes all of the values for which the graph is positive and decreasing?all real values of x where x < −1all real values of x where x < 1all real values of x where 1 < x < 3all real values of x where x > 3

Accepted Solution

A:
Answer:All real values of x where x < −1.Step-by-step explanation:There is a turning point at x= 1 and f(x) = -4 and it open upwards.So it decreases for all real values of x  where x < 1. But it passes through the point (-1,  0) after which the values of the function become negative.So the answer is all real values where x < -1.