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Grade 9 practice chapters

1. Grade 9 · Chapter 301

   Compare repeated growth factors · practice 32

   Start at 4 and apply a 20% change during each of 7 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

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2. Grade 9 · Chapter 302

   Verify an algebraic solution · practice 33

   Solve 2x + (9) = 12, then check by substitution. Follow the calculation, then test the quantities in the animated example.

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3. Grade 9 · Chapter 303

   Test a complete solution ray · practice 33

   Solve -8x ≤ -15, including the boundary. Follow the calculation, then test the quantities in the animated example.

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4. Grade 9 · Chapter 304

   Interpret signed slope and intercept · practice 30

   For the line y = -3.5x + (-2), 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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5. Grade 9 · Chapter 305

   Classify line-system outcomes · practice 33

   Solve the simultaneous equations y = -1x and y = 1x + (7). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

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6. Grade 9 · Chapter 306

   Connect symmetry and quadratic values · practice 33

   For y = -2(x − (-3))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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7. Grade 9 · Chapter 307

   Explain a binomial area product · practice 33

   Evaluate (x + 1)(x + 6) at x = 2 by finding all four rectangle-area parts. Follow the calculation, then test the quantities in the animated example.

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8. Grade 9 · Chapter 308

   Preserve function-machine order · practice 33

   Let f(u) = 3u + (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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9. Grade 9 · Chapter 309

   Solve a two-direction distance condition · practice 33

   Solve |x − (-1)| = 7. Follow the calculation, then test the quantities in the animated example.

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10. Grade 9 · Chapter 310

    Compare repeated growth factors · practice 33

    Start at 5 and apply a 15% change during each of 4 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

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11. Grade 9 · Chapter 311

    Verify an algebraic solution · practice 34

    Solve 1x + (-11) = 1, then check by substitution. Follow the calculation, then test the quantities in the animated example.

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12. Grade 9 · Chapter 312

    Test a complete solution ray · practice 34

    Solve -2x ≤ 9, including the boundary. Follow the calculation, then test the quantities in the animated example.

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13. Grade 9 · Chapter 313

    Interpret signed slope and intercept · practice 31

    For the line y = 3.5x + (-6), 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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14. Grade 9 · Chapter 314

    Classify line-system outcomes · practice 34

    Solve the simultaneous equations y = 2.5x and y = -2.5x + (1). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

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15. Grade 9 · Chapter 315

    Connect symmetry and quadratic values · practice 34

    For y = 0.5(x − (0))² + (-0.5), find y at x = 2 and identify the vertex. Follow the calculation, then test the quantities in the animated example.

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16. Grade 9 · Chapter 316

    Explain a binomial area product · practice 34

    Evaluate (x + 4)(x + 4) at x = 5.5 by finding all four rectangle-area parts. Follow the calculation, then test the quantities in the animated example.

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17. Grade 9 · Chapter 317

    Preserve function-machine order · practice 34

    Let f(u) = 2u + (0) and g(u) = u². Find f(g(2.5)) and g(f(2.5)). Follow the calculation, then test the quantities in the animated example.

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18. Grade 9 · Chapter 318

    Solve a two-direction distance condition · practice 34

    Solve |x − (7)| = 3.5. Follow the calculation, then test the quantities in the animated example.

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19. Grade 9 · Chapter 319

    Compare repeated growth factors · practice 34

    Start at 6 and apply a 10% change during each of 1 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

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20. Grade 9 · Chapter 320

    Verify an algebraic solution · practice 35

    Solve 8x + (-7) = -11, then check by substitution. Follow the calculation, then test the quantities in the animated example.

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