Worksheets — Set 20

Algebra I · Linear equations and inequalities

Print and write your answers. Use diagrams to show thinking.

Warm-up

1. Solve: 3x + 26 = 38 = ___ 2. Solve: x² − 26x + 6 = 0 = ___ 3. Solve and graph: 22x − 24 > 23 ___

_See printable PDF for diagram._

Written practice

1. Solve: 2x + 25 = 37 = ___ 2. Solve: x² − 25x + 8 = 0 = ___ 3. Solve and graph: 21x − 23 > 22 ___ 4. Solve the system: x + y = 28, x − y = 22 ___ 5. Check your solution by substitution: x = ___ 6. Justify one step in your solution in words. ___ 7. Solve: 5x + 28 = 40 = ___ 8. Solve: x² − 28x + 8 = 0 = ___

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More written practice

1. Solve and graph: 24x − 26 > 25 ___ 2. Solve the system: x + y = 31, x − y = 25 ___ 3. Solve: 4x + 31 = 43 = ___ 4. Solve: x² − 31x + 8 = 0 = ___ 5. Solve and graph: 27x − 29 > 28 ___ 6. Solve the system: x + y = 34, x − y = 28 ___

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Patterns and rules

1. Solve: 3x + 42 = 54 = ___ 2. Solve: x² − 42x + 7 = 0 = ___ 3. Solve and graph: 38x − 40 > 39 ___

_See printable PDF for diagram._

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Stretch

1. Solve: 3x + 50 = 62 = ___ 2. Solve: x² − 50x + 6 = 0 = ___

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Parent tip: Do the same operation to both sides