Algebra I Chapter 12 Review A

Which variable represents the constant of variation?

• a

• x

• k

• y

Fill in the blank: "Functions are relations in which every allowable input yields exactly ___ output(s)."

• 1

• 2

• 3

• 5

Which term describes all of the allowable values for x in a function?

• Direct Variation

• Domain

• Relation

• Vertex

Which of the following describes the graph of a quadratic function?

• Relation

• Linear

• Bell Curve

• Parabola

Which of the following describes the point on a parabola where the slope switches from negative to positive?

• Vertex

• Domain

• Axis

• Zero of the Function

Determine the constant of variation for the following: y varies directly with x, and y = 15 when x = 25.

Determine the formula for the following: y varies directly with x, and y = 5 when x = 10.

• 0

• 1

• -1

• 9

• 2