Comparing Functions

Who is losing weight faster?

• Valerie

• Oscar

• Mrs. Conte

• They are losing the same amount of weight

Who has the greater rate of change?

• Smith has the greater rate of change.

• Harmon has the greater rate of change.

• Macey has the greater rate of change.

• They have the same rate of change

Who has the greater rate of change?

• CJ has a greater rate of change with 6.5

• Holland has a greater rate of change with 6

• CJ has a greater rate of change with 2/13

• They have the same rate of change.

Who weighed more at the beginning of the show?

• Valerie

• Oscar

• Mrs. Conte

• They weighed the same

Is this a function?

• Yes

• No

The range of the function represented by the set of ordered pairs {(1,2), (2,4), (3,6), (4,8)} is (a)   .

• {1, 2, 3, 4}

• {2, 4, 6, 8}

• {1, 3, 5, 7}

• {2, 3, 4, 5}

Which of the following represents a function?

The mapping ​ (a)   y as a function of x, because ​ (b)  

• does not represent

• does represent

• each x-value corresponds to more than one y-value

• each x-value corresponds to only one y-value

• A line with a positive slope that crosses the y-axis at 3

• A line with a negative slope that crosses the y-axis at 3

• A line with a positive slope that crosses the y-axis at -3

• A line with a negative slope that crosses the y-axis at -3

Equation A: y = 3x - 1
Equation B: y = 1/2x + 1
Which equation has a higher y intercept? 

• Equation A

• Equation B

• They have the same Y intercept