Function Tables WorksheetsGrades 4–5–6–7
Function Tables: Find the Input Worksheets
Work backward from the given output and function rule to solve for the missing input x.
Function Tables: Find the Input
Seed #104729Name:
Date:
Use the function rule to find the missing input x in each table.
1)
Complete the function table [(7 → 13), (? → 15), (11 → 17), (13 → 19)] using f(x) = x + 6: Find the input x when f(x) = 15: x = ______
2)
Complete the function table [(7 → 3), (? → 5), (11 → 7), (13 → 9)] using f(x) = x − 4: Find the input x when f(x) = 5: x = ______
3)
Complete the function table [(5 → 35), (? → 42), (7 → 49), (8 → 56)] using f(x) = 7x: Find the input x when f(x) = 42: x = ______
4)
Complete the function table [(8 → 4), (? → 5), (12 → 6), (14 → 7)] using f(x) = x ÷ 2: Find the input x when f(x) = 5: x = ______
5)
Complete the function table [(8 → 20), (? → 22), (12 → 24), (14 → 26)] using f(x) = x + 12: Find the input x when f(x) = 22: x = ______
6)
Complete the function table [(14 → 8), (16 → 10), (? → 12), (20 → 14)] using f(x) = x − 6: Find the input x when f(x) = 12: x = ______
7)
Complete the function table [(? → 30), (6 → 36), (7 → 42), (8 → 48)] using f(x) = 6x: Find the input x when f(x) = 30: x = ______
8)
Complete the function table [(? → 4), (25 → 5), (30 → 6), (35 → 7)] using f(x) = x ÷ 5: Find the input x when f(x) = 4: x = ______
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