Demo. An invented family, made-up minutes, nobody's real child. The quizzes work: pass a round and watch the clock change.

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📐 Maths, Years 9 and 10

Years 9 to 10 · Read up first

10 questions. Get 8 right to earn 10 minutes. All 10 right = +5 bonus. They start easy and get harder as you go, so treat the first few as a warm-up. Every one you miss comes back with the answer and why.

1. In the equation y = 2x + 5, what is the gradient?

0.5257

2. What does the gradient of a straight-line graph measure?

The area under the lineHow long the line isWhere the line crosses the y-axisHow steep the line is

3. In the equation y = 3x - 4, where does the line cross the y-axis?

(0, 4)(4, 0)(0, 3)(0, -4)

4. Expand: -2(x - 4)

2x - 8-2x + 4-2x - 8-2x + 8

5. Find the gradient of the line joining (1, 2) and (3, 8).

4263

6. Two box plots compare test scores for class A and class B. Class A's box is entirely to the right of class B's box. What does this tell you?

Class A's scores were more spread outClass A had more students than class BThe two classes had the same medianClass A generally scored higher than class B

7. Solve: 5(x - 2) = 20

x = 6x = 3.6x = 4x = 22

8. Expand: (x - 3)(x + 5)

x^2 + 2x + 15x^2 + 8x - 15x^2 - 2x - 15x^2 + 2x - 15

9. What is 2^-3 equal to?

-8-61/81/6

10. A bag has 3 red balls and 2 blue balls, with no replacement. What is the probability of picking red then blue?

2/53/56/253/10

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