8th Grade Math - Functions Practice

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This quiz illustrates the range of difficulty expected by the following Common Core State (CCS) standards:

 Question Common Core Standard # 1 8.F.2 2 8.F.1 3 8.F.2 4 8.F.3 5 8.F.4 6 8.F.1 7 8.F.3 8 8.F.5

Question 1: Given the linear function f1 in the table below and the linear function f2 represented by the equation y = -3.2x +6, which of the functions has a greater slope?

 x y 0 1 1 -3 2 -7 3 -11 4 -15

Question 2: Given the linear function f1 from question 1 above, what is x for y = 0?

Question 3: Given the linear function f1 represented by the equation y = -5, the linear function f2 represented by the equation y = -5 + x, and the linear function f3 represented by the equation y = 3x - 9, which of the functions has a lowest rate of change?

Question 4: Which of the following equations represent linear functions?

Question 5: Given the linear function f(x) in the table below , what are the initial value and the rate of change of the function?
 x f(x) 0 6 1 3 2 0 3 -3 4 -6

Question 6: Determine if f(x), g(x), h(x) and i(x) are functions. Question 7: Given the four functions in the table below, the only linear function between f1, f2, f3 and f4 is .
 x f1 f2 f3 f4 0 0 -1 4 -2 1 1 0 1 0 2 4 1 -1 2 3 9 5 4 4

Question 8: In the figure below, the function displayed is linear and decreasing on the interval. Press the Submit button to see the results.