Question

Algebra

Answer 1

Plug in two points in each of the functions to see if it stands :)

Answer 2

For example, for the first choice f(x)=-0.4+4x, I'd plug in the first two points (11,0.4) and (12,0.8)

First point: When x=11,
f(x)=-0.4+4(11)=-0.4+44=43.6

Second point: When x=12,
f(x)=-0.4+4(12)=-0.4+48=47.6

Therefore f(x)=-0.4+4x is \(\mbox{NOT}\) the answer.

Answer 3

oh ok