10,000 ways to practice.
One idea at a time.

Attempt · Explain · Animate

Grade 9 practice chapters

1. Grade 9 · Chapter 1

   Verify an algebraic solution · practice 1

   Solve 2x + (3) = -15, then check by substitution. Follow the calculation, then test the quantities in the animated example.

   Question · Worked solution · Animated example

   Open practice chapter

2. Grade 9 · Chapter 2

   Test a complete solution ray · practice 1

   Solve 8x ≤ -24, including the boundary. Follow the calculation, then test the quantities in the animated example.

   Question · Worked solution · Animated example

   Open practice chapter

3. Grade 9 · Chapter 3

   Interpret signed slope and intercept · practice 1

   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

   Open practice chapter

4. Grade 9 · Chapter 4

   Classify line-system outcomes · practice 1

   Solve the simultaneous equations y = -0.5x and y = 3x + (8). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

   Question · Worked solution · Animated example

   Open practice chapter

5. Grade 9 · Chapter 5

   Connect symmetry and quadratic values · practice 1

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

   Question · Worked solution · Animated example

   Open practice chapter

6. Grade 9 · Chapter 6

   Explain a binomial area product · practice 1

   Evaluate (x + 1)(x + 1) at x = 4.5 by finding all four rectangle-area parts. Follow the calculation, then test the quantities in the animated example.

   Question · Worked solution · Animated example

   Open practice chapter

7. Grade 9 · Chapter 7

   Preserve function-machine order · practice 1

   Let f(u) = 3u + (-2) and g(u) = u². Find f(g(-1)) and g(f(-1)). Follow the calculation, then test the quantities in the animated example.

   Question · Worked solution · Animated example

   Open practice chapter

8. Grade 9 · Chapter 8

   Solve a two-direction distance condition · practice 1

   Solve |x − (7)| = 4. Follow the calculation, then test the quantities in the animated example.

   Question · Worked solution · Animated example

   Open practice chapter

9. Grade 9 · Chapter 9

   Compare repeated growth factors · practice 1

   Start at 2 and apply a -5% change during each of 1 complete periods. Find the final amount. Follow the calculation, then test the quantities in the animated example.

   Question · Worked solution · Animated example

   Open practice chapter

10. Grade 9 · Chapter 10

    Verify an algebraic solution · practice 2

    Solve 1x + (8) = 54, then check by substitution. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

11. Grade 9 · Chapter 11

    Test a complete solution ray · practice 2

    Solve 2x ≤ 0, including the boundary. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

12. Grade 9 · Chapter 12

    Interpret signed slope and intercept · practice 2

    For the line y = 0.5x + (-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

    Open practice chapter

13. Grade 9 · Chapter 13

    Classify line-system outcomes · practice 2

    Solve the simultaneous equations y = 3x and y = -0.5x + (2). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

14. Grade 9 · Chapter 14

    Connect symmetry and quadratic values · practice 2

    For y = 0.5(x − (-1))² + (-2.5), find y at x = 2 and identify the vertex. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

15. Grade 9 · Chapter 15

    Explain a binomial area product · practice 2

    Evaluate (x + 4)(x + 7) at x = 2 by finding all four rectangle-area parts. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

16. Grade 9 · Chapter 16

    Connect powers and reciprocals · practice 1

    Evaluate 2 raised to the integer power 4. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

17. Grade 9 · Chapter 17

    Preserve function-machine order · practice 2

    Let f(u) = 2u + (5) and g(u) = u². Find f(g(4)) and g(f(4)). Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

18. Grade 9 · Chapter 18

    Solve a two-direction distance condition · practice 2

    Solve |x − (-2)| = 1. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter

19. Grade 9 · Chapter 19

    Compare repeated growth factors · practice 2

    Start at 3 and apply a -10% 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

    Open practice chapter

20. Grade 9 · Chapter 20

    Verify an algebraic solution · practice 3

    Solve 8x + (12) = 42, then check by substitution. Follow the calculation, then test the quantities in the animated example.

    Question · Worked solution · Animated example

    Open practice chapter