Two-Variable Data: Models and Scatterplots

SAT Math· difficulty 3/5

A linear model for predicting weekly expenses is y=30x+100y = 30x + 100 where xx is hours worked. What does the slope 30 represent?

  • A

    Increase in expenses per hour worked

    check_circle
  • B

    Total expenses

  • C

    Hours worked

  • D

    Fixed cost

Explanation

Slope = rate of change of yy per unit xx: expenses increase by 30 dollars per hour.

Want 10 more like this — adaptive to your weak spots?

Related questions