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Grade 9 practice chapters

1. Grade 9 · Chapter 241

   Interpret signed slope and intercept · practice 23

   For the line y = 3x + (-3), 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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2. Grade 9 · Chapter 242

   Classify line-system outcomes · practice 26

   Solve the simultaneous equations y = -1.5x and y = -2.5x + (3). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

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3. Grade 9 · Chapter 243

   Connect symmetry and quadratic values · practice 26

   For y = 0.5(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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4. Grade 9 · Chapter 244

   Explain a binomial area product · practice 26

   Evaluate (x + 4)(x + 6) at x = 6 by finding all four rectangle-area parts. Follow the calculation, then test the quantities in the animated example.

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5. Grade 9 · Chapter 245

   Preserve function-machine order · practice 26

   Let f(u) = 2u + (-2) 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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6. Grade 9 · Chapter 246

   Solve a two-direction distance condition · practice 26

   Solve |x − (3)| = 7.5. Follow the calculation, then test the quantities in the animated example.

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7. Grade 9 · Chapter 247

   Compare repeated growth factors · practice 26

   Start at 8 and apply a -40% change during each of 2 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

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8. Grade 9 · Chapter 248

   Verify an algebraic solution · practice 27

   Solve 8x + (4) = 2, then check by substitution. Follow the calculation, then test the quantities in the animated example.

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9. Grade 9 · Chapter 249

   Test a complete solution ray · practice 27

   Solve 4x ≤ -7, including the boundary. Follow the calculation, then test the quantities in the animated example.

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10. Grade 9 · Chapter 250

    Interpret signed slope and intercept · practice 24

    For the line y = 2.5x + (10), 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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11. Grade 9 · Chapter 251

    Classify line-system outcomes · practice 27

    Solve the simultaneous equations y = 2x and y = 0.5x + (-4). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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12. Grade 9 · Chapter 252

    Connect symmetry and quadratic values · practice 27

    For y = -1.5(x − (0))² + (0), find y at x = 2 and identify the vertex. Follow the calculation, then test the quantities in the animated example.

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13. Grade 9 · Chapter 253

    Explain a binomial area product · practice 27

    Evaluate (x + 2)(x + 3) 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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14. Grade 9 · Chapter 254

    Preserve function-machine order · practice 27

    Let f(u) = 1u + (5) and g(u) = u². Find f(g(-0.5)) and g(f(-0.5)). Follow the calculation, then test the quantities in the animated example.

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15. Grade 9 · Chapter 255

    Solve a two-direction distance condition · practice 27

    Solve |x − (-6)| = 4.5. Follow the calculation, then test the quantities in the animated example.

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16. Grade 9 · Chapter 256

    Compare repeated growth factors · practice 27

    Start at 9 and apply a 40% change during each of 6 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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17. Grade 9 · Chapter 257

    Verify an algebraic solution · practice 28

    Solve 7x + (9) = -10, then check by substitution. Follow the calculation, then test the quantities in the animated example.

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18. Grade 9 · Chapter 258

    Test a complete solution ray · practice 28

    Solve 6x ≤ 16, including the boundary. Follow the calculation, then test the quantities in the animated example.

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19. Grade 9 · Chapter 259

    Interpret signed slope and intercept · practice 25

    For the line y = 1.5x + (-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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20. Grade 9 · Chapter 260

    Classify line-system outcomes · practice 28

    Solve the simultaneous equations y = 3x and y = 0.5x + (4). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

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