Ireally don’t understand what to do for this problem

Slope = 6.25

Y-intercept = 8.50 or 8.5

Equation: y = 6.25x + 8.50 or y = 6.25x + 8.5

Proportional = No

Step-by-step explanation:

The slope is also the rate of change and the question states that Kayla earned $6.25 an hour. So your slope also known as rate of change is 6.25.

Your y-intercept is the starting point and in the question it states that Kayla received $8.50 in tips. So your y-intercept also known as starting point is $8.50.

The Equation is meant to be set-up like this:

y = mx + b which is y = slope + y-intercept

Since $6.25 is our slope and $8.50 is our y-intercept lets arrange it:

y = 6.25x + 8.50

A proportional graph is a graph that has the line drawn from the equation going through the origin which is (0,0) the middle intersection between the y and x line. So with that being said the graph is not proportional because it doesn't go through the origin.

How do I know this?

I know this because the starting point in the equation that I graph is 8.50 or 8.5 and it does not start from (0,0) or 0 so it does not cross the (0,0) point.  

the answers are in the images, i received 100% on this assignment. hope this !

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: