A.is a linear function because That makes this a linear function—a function is linear if its graph forms a straight line. The line is straight because the variables change at a constant rate. That is another characteristic of linear functions—they have a constant rate of change.
B. 25x+5
C.0 is the meaning of the cell phone the first number in the x value
D.100 is the number that the phone would cost
E.5x=10 2*5=10
F..0 is the meaning of the cell phone the first number in the x value
