Review Linear Functions

A group of friends are studying linear equations for the EOC. They consider the equation y = 3x + 4. Each friend makes a statement about the solutions of this linear equation. Which friend is correct?

• Andy says that there is on one solution (1, 7)

• Barry says that there are exactly 5 solutions (0,4); (1, 7); (2, 10); (3, 13); and (4, 16)

• Carrie says that there are an infinite number of solutions - all the points that lie on the graph of the line.

• David says that there are an infinite number of solutions - all the points on the coordinate graph.

Tags

CCSS.8.EE.C.8B

Which statement about the graph of a two variable is true?

• The graph contains all the solutions to the equation.

• The graph contains only one solution to the equation.

• The graph contains everything but the solutions to the equation.

• The graph only contains some of the solutions to the equation.

Which equation matches the graph?

• 
• 
• 
• 

Which graph represents the equation f(x) = 3x - 4?

• 
• 
• 
• 

A linear function is graphed. What is the value of f(4)?

• -6

• -1

• 1

• 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Leslie used her new snowflake counting machine to record how quickly the snow was falling during a recent storm. The snow fell at 4 distinct rates creating periods A, B, C, and D as shown. During which period did the snow fall at a rate that can be approximated by a linear function with a positive slope?

• A

• B

• C

• D

Tags

CCSS.HSF.IF.B.4

Leslie used her new snowflake counting machine to record how quickly the snow was falling during a recent storm. The snow fell at 4 distinct rates creating periods A, B, C, and D as shown. During which period did the snow fall at a rate that can be approximated by a linear function with a slope near 0?

• A

• B

• C

• D

Tags

CCSS.HSF.IF.B.4

What is the slope of the graph of the line, 5x - 7y = -30?

• -7/5

• -5/7

• 5/7

• 7/5

Tags

CCSS.8.EE.B.5

Where does the graph of y = -2x + 1 intersect the x-axis?

• (1/2, 0)

• (-1/2, 0)

• (0, -1/2)

• (0, 1/2)

Tags

CCSS.HSF-IF.C.7A

Luke graphs the number of deliveries he makes over time using the function y = 1/2x where x is the number of hours and y is the number of deliveries. He plans on working 8 hours today and wants to model the number of deliveries he will make throughout the day. What is a practical domain for this function given the context?

• all positive integers

• all positive integers where 0 < x < 8

• all real numbers

• all real numbers where 0 < x < 8