1. which of the following represents a function? x -2 -1 0 -1 -2 y 2 3 4 5 6
x 1 1 0 2 2 y 1 2 3 4 5
x 1 2 3 4 5 y 2 2 3 3 4
x 1 1 1 1 1 y 2 3 4 5 6
2. what is the domain of the function: {(2, 1); (4, 2); (6, 3); (8, 4)}? {1, 2, 3, 4} {1, 2, 3, 4, 6, 8} {2, 4, 6, 8} {6, 8}
3. what is the range of the function: {(2, 1); (4, 2); (6, 3); (8, 4)}? {1, 2, 3, 4} {1, 2, 3, 4, 6, 8} {2, 4, 6, 8} {6, 8}
4. suppose p varies directly with d, and p = 7 when d = 3. what is the value of d when p = 28? 4/3 12 16 140/3
5. given the function t(z) = 7 − z, find t(−4). −11 11 −3 3 6. what is the equation of the graph?
f(x) = − |x| + 2 f(x) = − |x| − 2 f(x) = − |x + 2| f(x) = − |x − 2| 7. the number of calories burned, c, varies directly with the time spent exercising, t. when dennis walks for 4 hours, he burns 800 calories. which of the following equations shows this direct linear variation? c = t c = 800t c = 4t c = 200t
James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays
Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.