Question

I really need help with this. Can anyone help me?

1. The equation of the line that separates grasslands and
forests is 7P - 5T = -70

Write an inequality that describes temperatures and
amounts of precipitation that correspond to forested
regions. (Include the line.)

2. The equation of the line that separates grasslands and
deserts is 35P - 3T = 140

Write an inequality that describes temperatures and
amounts of precipitation that correspond to desert
regions. (Include the line.)

Answer 1

Which is the dependent and which is the independent variable? (Which one goes on the x axis and which one goes on the y axis?) Or does it not matter?

Answer 2

It doesnt matter I think, sorry I am new to solving these types of problems