On a coordinate plane, a parabola opens down. It goes through (negative 1.9, negative 4), has a vertex of (0.5, 3.2), and goes through (3, negative 4). Consider the graph of the quadratic function. Which interval on the x-axis has a negative rate of change? - 2 to - 1 - 1.5 to 0 0 to 1 1 to 2.5

Question

Mathematics

Cowan

18 December, 03:07

On a coordinate plane, a parabola opens down. It goes through (negative 1.9, negative 4), has a vertex of (0.5, 3.2), and goes through (3, negative 4). Consider the graph of the quadratic function. Which interval on the x-axis has a negative rate of change? - 2 to - 1 - 1.5 to 0 0 to 1 1 to 2.5

+5

Answers (2)

Know the Answer?

Tiana Schaefer · Answer 1

The answer is A

Rory Pacheco · Answer 2

[1, 2.5]

Step-by-step explanation:

A rate of change on x - axis is defined as positive if the function increases as x does, and defined negative if y decreases as x increases.

Thus, we only need to see in which of those intervals [-2, - 1], [-1.5, 0], [0, 1]. [1, 2.5] the graph of the function goes only down if we look it from left to right.

The only one interval satisfying this condition is [1, 2.5].