1) Gathering the data
a)
(4,112) and ( 6,168)
Picking those points and inserting them in the slope-intercept formula:
Now plugging one point (4,112) into the y=mx +b, to find out b, the linear coefficient:
112=28(4) +b
112=112 +b
b= 0
So, the function for that is f(x) = 28x
