Question

What is the graph of the function?

f(x) = 2x 2

Answer 1

For f(x)=2x² graph, the answer is A.

Explanation:

• For x = -2; y = 8
• For x = -1; y = 2
• For x = 0; y = 0
• For x = 1; y = 2
• For x = 2; y = 8

Answer 2

The function given is f(x)=2x²

Check the coordinate of y when x=0 ⇒ f(0)=0
Check the coordinate of x when y=0 ⇒ x=0

We have two pairs of coordinate, (0, 0) and (0, 0)

The first two graphs have these coordinates so we need to do further checking

take x=1 ⇒ f(1) = 2(1)² = 2
take x=2 ⇒ f(2) = 2(2)² = 8

we have two pairs of coordinates; (1, 2) and (2, 8)

The correct answer is OPTION A