Student Name: / 2014
Standards and Grade Level Expectations Addressed in the Assessment: / 8th Grade: -Walk the Line -Whose Line is It -Frequently Scatter Brained /

Second Semester RTTTV

Common Assessment

  1. a.Parker paid for three pounds of gummy candy. Assuming each pound of gummy candy costs the same amount, complete the table of values representing the cost of gummy candy in pounds.

Gummy Candy in pounds / / / / / / / / /
Cost /
  1. Graph the data on the coordinate plane.

  1. On the same day, Parker’s friend Peggy bought 11 pounds of gummy candy. Using the graph how much did Peggy pay for the candy?
  1. The cost to enter and go on a ride at Wally’s Water Worldis shown in the graph below:

Wally’s Water World

A new water park just opened named Tony’s Tidal Takeover. You haven’t heard anything specific about how much it costs to go to this park, but some of your friends have told you what they spent. The information is organized in the table below.

# of rides / / / /
spent / / / /

Each park charges a different admission fee and a different fee per ride, but the cost of each ride remains the same.

  1. What is the admission cost for Wally’s Water World?

______

  1. What is cost per ride for Wally’s Water World?

______

  1. What is the admission cost for Tony’s Tidal Takeover?

______

  1. What is the cost per ride for Tony’s Tidal Takeover?

______

e. If you only have to spend, which park would you attend (assume the rides are the same quality)? Explain ______

  1. Given the equation, , write a second linear equation to create a system that:
  1. Has exactly one solution. Explain your reasoning.

Equation = ______

______

  1. Has no solution. Explain your reasoning.

Equation = ______

______

  1. Has infinitely many solutions. Explain your reasoning.

Equation = ______

______

  1. Use the table below to make a scatter plot of the temperature and the number of ice cream cones sold at the Stop and Shop.
Temperature / # of Cones Sold
58 / 48
80 / 77
89 / 88
64 / 57
82 / 84
71 / 62
93 / 98


  1. Is there a positive correlation, a negative correlation, or no correlation in the scatter plot? Explain the relationship between the data on the horizontal and vertical axis?

______

  1. Line and line are shown on the graph below. Use the graph to answer parts (a)–(d).

  1. Write an equation for in slope-intercept form.

Equation = ______

  1. Write an equation for in slope-intercept form.

Equation = ______

  1. Using the two equations solve the system of equations algebraically.
  1. How are your solutions for x and y represented on the graph?

______