Question

The black graph is the graph of y=f(x). Choose the equation for the red graph.

Need help please!!!

Answer 1

d

Explanation:

The red graph is an enlargement of the black graph.

Note coordinates of vertices of black graph to coordinates of red graph

(2, 2 ) → (2, 4 )

(4, - 2 ) → (4, - 4 )

(- 2, - 2 ) → (- 2, - 4 )

The y- coordinates of the red graph are twice the y- coordinates of the black graph.

and

`(y)/(2)` = f(x) ← multiply both sides by 2

y = 2f(x) ← as required, thus

equation of red graph is

`(y)/(2)` = f(x) → d