Write the equation for the function.

hope it helps u

Step-by-step explanation:

A function is a relationship where each input value (X) will create only one output value (Y). Basically, a single input value, can't create 2 different output values. Any equation with one or two variables that meet this definition would be a function.

y = 5 is the equation for a horizontal line,

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: