Answer:
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.
