PLEASE HELP ME OUT ILL GIVE U MY MEDIA IF YOU WANT TO TALK PERSONALLY FOR THIS SO U CAN GIVE ME THE ANSWERS :(

Because the bathtub is draining at a constant rate of 1/9 gallon, that would be your slope. If you had 30 gallons before you started draining, that would be your constant.
Equation: y=-1/9x+30 (the slope is negative because it’s constantly decreasing 1/9 gallons)

Because each month you’re paying $50, that’s your constant rate of change. It’s always repeating. 0.2 would be your constant because it always stays the same.
Equation: y=50x+0.2

Let’s sell boxes of pencils.

Each box costs you $2 so the constant is -3

The variable, x, will be how many boxes you will sell

You’ll sell each box for $3 so that’ll be your slope, the rate of change.

Equation: y=3x-2

Let me know if you have questions!