1) Abigail babysits for her neighbors and earns $12 for two hours. Two weeks later, Abigail babysits for three hours and earns $18. What is her constant of proportionality? 2) A recipe says to use 3 cups of flour to make 48 cookies. What is the constant of proportionality that relates the number of cookies made, y, to the number of cups of flour used, x ?
3) A cheetah can run at a speed of 70 miles per hour. Which representation shows the distance a cheetah can travel at this rate?
4) y=3x-2 what is the value of m? What is the y-intercept?
5) Carisma Car Wash earns $21 for 3 customer car washes in the morning and $42 for 6 customer car washes in the afternoon. If the amount of dollars spent varies directly with the number of customers, what is the constant of proportionality?
6) y=-4x What is the value of k?
7) Coach Vasquez runs four mornings of the week. On Monday morning, he ran for 1.3 hours at a speed of 7.4 miles per hour. How far did he run on Monday morning?
8) ally opened a savings account with an initial deposit of $650. She will not make any other additional deposits or withdraws. The account earns 2% simple interest. What is the total amount that Sally will have in her account after 3 years?
9) Jim decides to take out a $5000 student loan this year. If he will pay 10% interest compounded annually, how much will the total loan amount be in 1 years when he graduates?
10) A handy man charges a $60 service charge plus $50 an hour for labor. Which equation can be used to represent y, the total charge, for a job that took x hours?
11) Given the following equation find the y intercept. y=6x+8
12) A fish is swimming at a constant rate toward the ocean floor. The equation y = -7x - 3 can be used to represent this situation, where y is the depth of the fish in meters below sea level and x is the number of seconds the fish has been swimming. Which statement best describes the depth of the fish, given this equation?
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