Part A: 3+9x

Question

Part B: 5+8y
Which of the following are true statements select all that apply
1: the y-intercept for Part B is (0,5)
2: the Y intercepts of the graphs represent the total cost
3: the rate of change for Part A is 8

Answer 1

1: the y-intercept for Part B is (0,5) - True, the y-intercept for Part B can be found by setting y = 0 in the equation, giving us (0,5).
2: the Y intercepts of the graphs represent the total cost - False, the y-intercepts represent the initial value or the value of the function when x = 0, but it does not necessarily represent the total cost.
3: the rate of change for Part A is 8 - True, the coefficient of x in Part A is 9, so the rate of change is 9, not 8.