Direct and inverse variation Quiz
10 questions · easy to harder · Algebra 1 · score and step-by-step answers
How it works
- 10 questions, about 20 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 5 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
y varies directly with x. y = 12 when x = 4. Find y when x = 7.- A) y = 3
- B) y = 21
- C) y = 12
- D) y = 73
2 Question 2
y varies directly with x. y = 20 when x = 5. Write the equation. Find y.Type the answer.
3 Question 3
y varies inversely with x. y = 10 when x = 2. Find y when x = 5.- A) y = 20
- B) y = 25
- C) y = 4
- D) y = 10
4 Question 4
d varies directly with t. d = 120 when t = 2. Find d when t = 5.Type the answer.
5 Question 5
y is directly proportional to x. y = 36 when x = 9. Find y when x = 2.- A) y = 36
- B) y = 12
- C) y = 8
- D) y = 4
6 Question 6
Y is inversely proportional to x. y = 5 when x = 12. Find y when x = 10.Type the answer.
7 Question 7
p varies inversely with v. p = 30 when v = 4. Find p when v = 8.- A) p = 15
- B) p = 120
- C) p = 30
- D) p = 60
8 Question 8
y varies directly with x. y = 21 when x = 7. Find y when x = 10.Type the answer.
9 Question 9
Y varies directly with the square of x. y = 12 when x = 2. Find y when x = 5.- A) y = 4
- B) y = 253
- C) y = 12
- D) y = 75
10 Question 10
Y varies inversely with the square of x. y = 2 when x = 4. Find y when x = 8.Type the answer.