Independent Dependent Variable Math

Tickets sold for a race (t) , and the amount of money collected (m) Which is the INDEPENDENT VARIABLE?

The number of minutes spent talking on the phone (m) , and the amount of the phone bill (B) Which is the DEPENDENT variable?

Sophie earned $5, m, for every A she got on her report card, a. The dependent variable is:

On a graph, which axis shows the dependent variable?

• x-axis

• y-axis

• neither

• it changes

Brandon graphed the cost of his cell phone bill as he continued to use minutes. What is the independent variable for the given situation?

• minutes used per month

• cost in dollars

• cost per minute

• Brandon's cell phone

The total cost, t, for frozen yogurt depends on the weight, w, in ounces. If Freddy's frozen yogurt shop uses the equation t=0.34w+2 to determine the cost of frozen yogurt which represents the dependent variable in this situation?

• 0.34

• t

• 2

• w

Which ordered pair makes the equation false?

• (6, 5)

• (0, 4)

• (10, 8)

• (15, 10)

What best describes the unit rate of the linear function shown?

• 20 gallons of water per load of laundry

• 25 gallons of water per load of laundry

• 40 gallons of water per load of laundry

• 50 gallons of water per load of laundry

Two rock climbers are climbing a cliff. Compare the two representations and make a statement about each climber's rate per minute. Which statement is not true about the climber's rate per minute?

• Sam is climbing the cliff at a rate of 5 feet per minute.

• Mark is climbing the cliff at a rate twice as fast as Sam.

• Sam is climbing the cliff at a rate twice as fast as Mark.

• Mark is climbing the cliff at a rate of 10 feet per minute.

On a graph, which axis shows the independent variable?

• x-axis

• y-axis

• neither

• it changes