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:

QuestionCommon Core Standard #
18.F.2
28.F.1
38.F.2
48.F.3
58.F.4
68.F.1
78.F.3
88.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?

xy
01
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?
xf(x)
06
13
20
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 .
xf1f2f3f4
00-14-2
11010
241-12
39544



Question 8: In the figure below, the function displayed is linear and decreasing on the interval.





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