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Grade 9 practice chapters

1. Grade 9 · Chapter 521

   Solve a two-direction distance condition · practice 55

   Solve |x − (3)| = 7. Follow the calculation, then test the quantities in the animated example.

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2. Grade 9 · Chapter 522

   Compare repeated growth factors · practice 57

   Start at 1 and apply a -15% change during each of 5 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

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3. Grade 9 · Chapter 523

   Verify an algebraic solution · practice 58

   Solve 1x + (6) = 41, then check by substitution. Follow the calculation, then test the quantities in the animated example.

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4. Grade 9 · Chapter 524

   Test a complete solution ray · practice 58

   Solve -2x ≤ -21, including the boundary. Follow the calculation, then test the quantities in the animated example.

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5. Grade 9 · Chapter 525

   Interpret signed slope and intercept · practice 55

   For the line y = 3x + (-5), find y when x = 3 and identify the slope and vertical intercept. Follow the calculation, then test the quantities in the animated example.

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6. Grade 9 · Chapter 526

   Classify line-system outcomes · practice 58

   Solve the simultaneous equations y = -2x and y = 2x + (1). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

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7. Grade 9 · Chapter 527

   Connect symmetry and quadratic values · practice 58

   For y = 0.5(x − (-2.5))² + (-3), find y at x = 2 and identify the vertex. Follow the calculation, then test the quantities in the animated example.

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8. Grade 9 · Chapter 528

   Explain a binomial area product · practice 56

   Evaluate (x + 2)(x + 8) at x = 5 by finding all four rectangle-area parts. Follow the calculation, then test the quantities in the animated example.

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9. Grade 9 · Chapter 529

   Preserve function-machine order · practice 58

   Let f(u) = 1u + (0) and g(u) = u². Find f(g(-2)) and g(f(-2)). Follow the calculation, then test the quantities in the animated example.

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10. Grade 9 · Chapter 530

    Solve a two-direction distance condition · practice 56

    Solve |x − (-6)| = 4. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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11. Grade 9 · Chapter 531

    Compare repeated growth factors · practice 58

    Start at 2 and apply a -20% change during each of 2 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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12. Grade 9 · Chapter 532

    Verify an algebraic solution · practice 59

    Solve 8x + (10) = 29, then check by substitution. Follow the calculation, then test the quantities in the animated example.

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13. Grade 9 · Chapter 533

    Test a complete solution ray · practice 59

    Solve -4x ≤ 2, including the boundary. Follow the calculation, then test the quantities in the animated example.

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14. Grade 9 · Chapter 534

    Interpret signed slope and intercept · practice 56

    For the line y = 2.5x + (8), find y when x = 3 and identify the slope and vertical intercept. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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15. Grade 9 · Chapter 535

    Classify line-system outcomes · practice 59

    Solve the simultaneous equations y = 1.5x and y = -1.5x + (-5). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

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16. Grade 9 · Chapter 536

    Connect symmetry and quadratic values · practice 59

    For y = -1.5(x − (1))² + (2), find y at x = 2 and identify the vertex. Follow the calculation, then test the quantities in the animated example.

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17. Grade 9 · Chapter 537

    Explain a binomial area product · practice 57

    Evaluate (x + 5)(x + 6) at x = 3 by finding all four rectangle-area parts. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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18. Grade 9 · Chapter 538

    Preserve function-machine order · practice 59

    Let f(u) = 4u + (6) and g(u) = u². Find f(g(3)) and g(f(3)). Follow the calculation, then test the quantities in the animated example.

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19. Grade 9 · Chapter 539

    Solve a two-direction distance condition · practice 57

    Solve |x − (2)| = 0.5. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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20. Grade 9 · Chapter 540

    Compare repeated growth factors · practice 59

    Start at 3 and apply a -25% change during each of 7 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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