The table shows the total earnings y (in dollars) of a food server who works x hours.



a. Choose an equation that models the server’s earnings as a function of the number of hours the server works.

Responses

y=20xy is equal to 20 x

y=−20xy is equal to negative 20 x

y=20x+6y is equal to 20 x plus 6

y=−20x+18y is equal to negative 20 x plus 18

Question 2
b. Interpret the slope and the y-intercept of the line of fit.

Responses

The slope of 20 means that the server’s earnings increase by about $20 per hour. The y-intercept of 0 means that the server makes $0 if he does not work.
The slope of , 20, means that the server’s earnings increase by about $20 per hour. The , y, -intercept of 0 means that the server makes $0 if he does not work.

The slope of −20 means that the server’s earnings decrease by about $20 per hour. The y-intercept of 0 means that the server makes $0 in tips.
The slope of , negative 20, means that the server’s earnings decrease by about $20 per hour. The , y, -intercept of 0 means that the server makes $0 in tips.

The slope of 20 means that the server’s earnings increase by about $20 per hour. The y-intercept of 6 means that the server makes $6 without tips.
The slope of , 20, means that the server’s earnings increase by about $20 per hour. The , y, -intercept of 6 means that the server makes $6 without tips.

The slope of −20 means that the server’s earnings decrease by about $20 per hour. The y-intercept of 18 means that the server makes only $18 if he does not work.