Question

Describe the graph of the quadratic function f(x)=2(x+2)^2-1 by stating which way the parabola opens and whether it is stretched taller or compressed shorter when compared to the quadratic parent function? A. The parabola opens downward and is stretched by a factor of 2.B. The parabola opens downward and is compressed by a factor of 2.C. The parabola opens upward and is stretched by a factor of 2.D. The parabola opens upward and is compressed shorter by a factor of 2.

Answer 1

Answer: the answer is c. The parabola opens upward and is stretched taller by a factor of 2.

Step-by-step explanation: i took the quiz and got it right

Answer 2

EXPLANATION

Given the function:

f(x) = 2(x+2)^2-1 (Applying distributive property)

f(x) = 2X^2+2*4X+2*4-1

f(x) = 2x^2+8x+7

The parabola opens upward and is stretched by a factor of 2.