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Completing a Function Table from a Rule — Easy Worksheet 2
Grade 8 · Whoobee Name: ____________________ Date: __________
Use the rule to find the number that goes in place of ? in each table.
How to solve
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Example
The table follows the rule y = 2x + 9. What number goes in place of ?
| x | y |
|---|---|
| 3 | 15 |
| 4 | 17 |
| 5 | 19 |
| 6 | 21 |
| x | y |
|---|---|
| 0 | ? |
| 1 | 6 |
| 5 | 10 |
| 6 | 11 |
Not quite. The answer is
💡 The ? is the output for x = 0. Put x = 0 into y = x + 5: y = 0 + 5 = 5. The missing output is 5.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 0. Put x = 0 into y = x + 5: y = 0 + 5 = 5. The missing output is 5.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = 4x + 1. What number goes in place of ?
| x | y |
|---|---|
| 0 | ? |
| 1 | 5 |
| 5 | 21 |
| 6 | 25 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
| x | y |
|---|---|
| 1 | 10 |
| 2 | 13 |
| 5 | 22 |
| 6 | ? |
Not quite. The answer is
💡 The ? is the output for x = 6. Put x = 6 into y = 3x + 7: y = 3(6) + 7 = 18 + 7 = 25. The missing output is 25.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 6. Put x = 6 into y = 3x + 7: y = 3(6) + 7 = 18 + 7 = 25. The missing output is 25.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = 5x + 3. What number goes in place of ?
| x | y |
|---|---|
| 0 | 3 |
| 2 | 13 |
| 3 | ? |
| 6 | 33 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
| x | y |
|---|---|
| 3 | 18 |
| 4 | ? |
| 5 | 24 |
| 6 | 27 |
Not quite. The answer is
💡 The ? is the output for x = 4. Put x = 4 into y = 3x + 9: y = 3(4) + 9 = 12 + 9 = 21. The missing output is 21.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 4. Put x = 4 into y = 3x + 9: y = 3(4) + 9 = 12 + 9 = 21. The missing output is 21.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = 5x + 7. What number goes in place of ?
| x | y |
|---|---|
| 2 | 17 |
| 3 | ? |
| 4 | 27 |
| 6 | 37 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
| x | y |
|---|---|
| 0 | 5 |
| 1 | 10 |
| 3 | 20 |
| 6 | ? |
Not quite. The answer is
💡 The ? is the output for x = 6. Put x = 6 into y = 5x + 5: y = 5(6) + 5 = 30 + 5 = 35. The missing output is 35.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 6. Put x = 6 into y = 5x + 5: y = 5(6) + 5 = 30 + 5 = 35. The missing output is 35.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = 2x + 5. What number goes in place of ?
| x | y |
|---|---|
| 1 | 7 |
| 2 | ? |
| 4 | 13 |
| 6 | 17 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
| x | y |
|---|---|
| 1 | ? |
| 2 | 17 |
| 3 | 22 |
| 6 | 37 |
Not quite. The answer is
💡 The ? is the output for x = 1. Put x = 1 into y = 5x + 7: y = 5(1) + 7 = 5 + 7 = 12. The missing output is 12.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 1. Put x = 1 into y = 5x + 7: y = 5(1) + 7 = 5 + 7 = 12. The missing output is 12.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = 5x + 4. What number goes in place of ?
| x | y |
|---|---|
| 0 | 4 |
| 2 | ? |
| 3 | 19 |
| 6 | 34 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
| x | y |
|---|---|
| 1 | ? |
| 3 | 20 |
| 4 | 24 |
| 5 | 28 |
Not quite. The answer is
💡 The ? is the output for x = 1. Put x = 1 into y = 4x + 8: y = 4(1) + 8 = 4 + 8 = 12. The missing output is 12.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 1. Put x = 1 into y = 4x + 8: y = 4(1) + 8 = 4 + 8 = 12. The missing output is 12.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = 2x + 4. What number goes in place of ?
| x | y |
|---|---|
| 0 | ? |
| 2 | 8 |
| 3 | 10 |
| 6 | 16 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
| x | y |
|---|---|
| 0 | 5 |
| 1 | ? |
| 2 | 11 |
| 5 | 20 |
Not quite. The answer is
💡 The ? is the output for x = 1. Put x = 1 into y = 3x + 5: y = 3(1) + 5 = 3 + 5 = 8. The missing output is 8.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 1. Put x = 1 into y = 3x + 5: y = 3(1) + 5 = 3 + 5 = 8. The missing output is 8.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = x + 4. What number goes in place of ?
| x | y |
|---|---|
| 0 | 4 |
| 1 | ? |
| 5 | 9 |
| 6 | 10 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
| x | y |
|---|---|
| 1 | 6 |
| 3 | 16 |
| 4 | ? |
| 6 | 31 |
Not quite. The answer is
💡 The ? is the output for x = 4. Put x = 4 into y = 5x + 1: y = 5(4) + 1 = 20 + 1 = 21. The missing output is 21.
✓ Correct!
Not quite. The answer is
💡 The ? is the output for x = 4. Put x = 4 into y = 5x + 1: y = 5(4) + 1 = 20 + 1 = 21. The missing output is 21.
💡 How to solve: Completing a Function Table from a Rule
The rule tells you how to turn each input x into its output y. Put the input from the row with the ? into the rule in place of x, then multiply first and add or subtract second. The result is the missing output.
Try a similar one
The table follows the rule y = 5x + 2. What number goes in place of ?
| x | y |
|---|---|
| 0 | 2 |
| 1 | 7 |
| 4 | ? |
| 5 | 27 |
✓ You've got it! Press Next to keep going. Not yet — the answer is . Read the steps above once more.
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Completing a Function Table from a Rule — Easy Worksheet 2
Use the rule to find the number that goes in place of ? in each table.