Equations and Functions Review

Mimi was given two pieces of information and must write the equation of a line. She knows the line crosses the y-axis at the point (0,-4) and has a slope of 8. What is the equation of the line?

• y = -4x + 8

• y = 4x – 8

• y = -8x – 4

• y = 8x – 4

Which graph accurately displays the linear function modeled in the table?

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Tags

CCSS.8.EE.B.5

Which coordinate plane contains plotted points that could represent the graph of a linear function?

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Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which relationship does NOT represent a linear function?

• the total cost of a large pizza based on $9.95 plus $0.75 for each additional topping

• the ant population for a colony that begins with 5 ants and doubles in number every two weeks"

• the amount of gasoline in a vehicle that begins with 22 gallons and decreases by one gallon every 28 miles

• A history student’s grade on a test that begins at 100 but decreases by 4 points for each question answered incorrectly

Tags

CCSS.8.F.A.3

Which equation corresponds to the values in the table below?

• y = -3/2x + 2

• y = 3/2x – 3

• y = 3/2x + 2

• y = -3/2x - 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which relationship about earnings does NOT represent a linear function?

• a)a doctor’s earnings based on a monthly salary

• an administrative assistant’s earnings based on an hourly wage

• a car salesmen’s earnings based on percent of weekly sales

• a university professor’s earnings based on an annual salary

Tags

CCSS.8.F.A.3

What value should replace the question mark in the table if the table represents a linear function?

• 15

• 11

• -11

• 13

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Which represents a linear function?

• y = x² – 3

• y = 4x³

• y = 3/4 x – 2

• y = 2^x + 1

Tags

CCSS.8.F.A.3

Which represents a linear function?

• y = x(x + 3)

• y = ½x – 7

• y = 8/x + 2

• y = x² + 10

Tags

CCSS.8.F.A.3

A restaurant can serve 22.3 ice cream sundaes from each gallon of ice cream. Which equation represents the number of sundaes, n, that can be made from g gallons of ice cream?

• n = 22.3 x g

• n = 22.3/g

• n = g/22.3

• n = 22.3 + g

Tags

CCSS.6.EE.C.9