1. Kellen has a graph showing the number of pencils he has left each week as he goes through the month. The graph has the following points on it: (1,15), (2,12), (3,8). Which of the following numbers identifies one of the independent quantities? a)12 b)15 c)8 d)3
2. A graph showing the cost of a pizza and the number of toppings has the following points: (1,5), (2,6), (3,7), (4,8). Identify which number represents a dependent quantity on the graph. a)1 b)7 c)3 d)4
3. Independent: 1, 2, 3. Dependent: 0, 1, 2. Sachi is conducting an experiment to determine the effects of sunlight on plant growth. She is going to measure the plants’ heights each week in conditions of no sun, medium sun, and full sun. The table shows her results. What should she label her dependent quantity column? a)Plant Height b)Number of Weeks c)Type of Plant d)Amount of Sun
4. Robin is baking a cake for the first time. Even though the box says to set the oven to 350 degrees, Robin is thinking that the higher the temperature, the faster the cake will bake. Identify the dependent and independent variables. a)i= the time for the cake to bake, d= the temperature of the air in the oven b)i= turn the oven to 350 degrees, d= the temperature of the air in the oven c)i= baking a cake for the first time, d= the time for the cake to bake d)i=the temperature of the air in the oven, d=the time for the cake to bake
5. Troy is selling homemade cake slices at the football game. The number of cakes slices he sells determines how much money he earns. Identify the dependent and independent variables. a)i= the football game, d= the amount of money he earns b)i= how much money he earns, d= Troy is selling homemade cake slices c)i= the amount of money he earns, d= the number of cakes slices d)i= the number of cakes slices, d= the amount of money he earns
1. d) 3
2. b) 7
3. a) Plant Height
4. a) i= the time for the cake to bake, d= the temperature of the air in the oven
5. d) i= the number of cake slices, d= the amount of money he earns