Unit Test — Unit test Answers

The cost of a service call to fix a washing machine can be expressed by the linear function , where y represents the total cost and x represents the number of hours it takes to fix the machine. What does the y-intercept represent?

A florist shop represents its first month’s sales with the equation , where x represents the number of days that the shop is open and y represents the sales in dollars. The owner of the shop would like to calculate the number of days it took to reach $3,200 in sales. Which would be used to solve the problem?

Hal, Zelda, Maya, and Jason each recorded the height and age of five classmates. They used the data to create the tables below. In which student’s data can height be considered a function of age?