Answer:
y=2x+4 or f(x)=2x+4
Step-by-step explanation:
f(0)=4 is (0,4) and f(2)=8 is (2,8)
first, find the slope using the equation y2-y1/x2-x1
8-4/2-0
4/2
2
now, take one of the points, and put it into the equation y2-y1=m(x-x1) (m is slope)
take (0,4) for example
y-4=2(x-0)
y-4=2x
y=2x+4
y=f(x)
so, substitute as
f(x)=2x+4
hope this helps!
