Question

Plz help me with this

Answer 1

Answer: d) y = -2 sin 2x

Explanation:

The general equation of a sin graph is: y = A sin (Bx - C) + D

Compare the given graph with y = sin x

There are 3 differences:

• the amplitude of the new graph is 2 (A = 2)
• the given graph is reflected over the x-axis (A is negative)
• the period changed from 2π to π (B = 2)

So, the equation of the given graph is: y = -2 sin 2x