Chapter 3 Linear and Quadratic Functions

Use the slope and y-intercept to graph the linear function. f(x) =5/3x + 3

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Graph the function. State whether it is increasing, decreasing, or constant. f(x) = 5x + 3

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Linda needs to have her car towed. Little Town Auto charges a flat fee of $65 plus $2 per mile towed. Write a function expressing Linda's towing cost, c, in terms of miles towed, x. Find the cost of having a car towed 15 miles.

• c(x) = 2x + 65; $85

• c(x) = 2x; $30

• c(x) = 2x + 65; $95

• c(x) = 2x; $67

Tags

CCSS.HSF-BF.A.1A

Graph the function using its vertex, axis of symmetry, and intercepts. f(x) = x^2+ 2x + 1

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Tags

CCSS.HSF-IF.C.7A

Which of the following represents a quadratic function?

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

Tags

CCSS.HSA-REI.B.4B

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Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value. f(x) = x^2 - 2x - 9

• maximum; - 10

• minimum; - 10

• minimum; 1

• maximum; 1