Which expression is equivalent to 9x − 12?

a. 3(9x − 4)
b. 3(x − 12)
c. 3(3x − 4)
d. 3(3x − 12)

C. 3(3x − 4)

Step-by-step explanation:

9x − 12

Factor out a 3

3(3x-4)

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.