What is the slope of the line shown below (3,9) (1,1)

Step-by-step explanation:

The formula of a slope:

We have the points

Substitute:

m=4

Step-by-step explanation:

Slope can be found using the following formula:

where and are points on the line.

We are given the points (3,9) and (1,1). Therefore,

Substitute each value into the formula.

Subtract in the numerator first.

Subtract in the denominator.

Divide.

The slope of the line is 4.

inverse property is the answer

step-by-step explanation:

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).