Question

.In the function f(x), x is replaced with 2x and 1 is added to the function.

f(x)=−3sinx

What effect does this have on the graph of the function?

a. The graph is horizontally compressed by a factor of 2 and shifts up 1 unit
b. The graph is horizontally compressed by a factor of 2 and shifts down 1 unit
c. The graph is vertically stretched by a factor of 2 and shifts up 1 unit*
d. The graph is vertically stretched by a factor of 2 and shifts down 1 unit

Answer 1

No
I suggest making a quick sketch of
y = -3sinx
and
y = -3sin(2x) + 1

pick critical angles like 30, 45, 60, 90 degrees etc

Answer 2

Ok. So B??