Question

Compare the following to the parent function. Select all that apply.

y= 3x^2

A. Vertical Stretch
B. Vertical Shrink
C. Reflection
D. Vertical Translation up units
E. Vertical Translation down units

Answer 1

Option A

Explanation:

We know the rule for vertical stretch

• y2=ky1

Where k>1

Here

• y=3x²
• y=3(y_1)

So it's vertical stretch

Answer 2

• A. Vertical Stretch

Explanation:

Given function

• y = 3x^2

Parent function is

• f(x) = x^2

The given is

• y = 3f(x) and it is the form of y = kf(x) with k > 1

Each point of y is 3 times closer to y-axis, therefore this is a vertical stretch.

Correct option is A only