Economics homework help !!! fast?

Question

If you are looking at a consumption function which graphs the relationship between income and spending, and you know that the slope of the relationship is 0.75.This would tell you that when income changes

a. spending increases by 25 percent

b. spending decreases by 75 percent

c. spending increases by 7 and a half percent

d. spending increases by 75 percent

Answer 1

Assuming income in x axis. Slope is 0.75 which means it is a straight line going up. Hence when income changes ie if it increases by 100 spending increases by 75.

Same way if income decreases by 100 spending reduces by 75.

You have not mentioned which side income moves. The answers could be b or d based on that.

Answer 2

since the question doesn't state how income changes i.e. increased income or decreased income, how can we answer this question?  B or D would work once we know which way income changed