Question

Which graph represents f(x)=4*2x?

Answer 1

Answer: Third option (bottom left)

Step-by-step explanation: We want to find which one of the graphs is the graph of the function f(x) = 4*2^x

Let's analyze some interesting points.

f(0) = 4*2^0 = 4*1 = 4

So we need to find the graph that passes through the point (0,4) (this means that intercepts the y-axis in the 4)

The graph that passes through the point (0,4) is the third option (bottom left one)

Answer 2

$f(x)=4\cdot2^x\\\\y-intercept\ for\ x=0:\\\\f(0)=4\cdot2^0=4\cdot1=4$