Functions in Real Life

What is the rate of change of a function over a given interval?

• The integral of the function over that interval

• The product of the x-values and y-values over that interval

• The sum of the x-values and y-values over that interval

• The difference in the y-values divided by the difference in the x-values over that interval

How do you determine the x-intercepts of a quadratic function?

• By finding the vertex of the function

• By integrating the function

• By setting the function equal to zero and solving for x

• By calculating the derivative of the function

Mathematical Equivalence

ON

f(x) = x+7 find f(1)

• 5

• 6

• 7

• 8

f(x) = x-5 find f(8)

• 5

• 3

• 9

• 13

What is x if
f(x) = -2?

• 4
• 0
• 3
• 8

For what value of t is H(t) = 4" ? 

• 0
• 1
• 2
• 14

Given the function below, what is the independent variable?

• The height of the plant (x-axis)

• The height of the plant (y-axis)

• Number of weeks (x-axis)

• Number of weeks (y-axis)

Given the function below, what is the dependent variable?

• The height of the plant (x-axis)

• The height of the plant (y-axis)

• Number of weeks (x-axis)

• Number of weeks (y-axis)