Is it a function? Quiz
10 questions · easy to harder · Algebra 2 · 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.
- 10 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
Is {(1, 2), (2, 4), (3, 6)} a function- A) Yes
- B) No
2 Question 2
Is {(0, 1), (1, 1), (2, 1)} a function- A) Yes
- B) No
3 Question 3
Is {(−1, 3), (0, 5), (2, 3), (5, 0)} a function- A) Yes
- B) No
4 Question 4
Is y = 2x + 1 a function- A) Yes
- B) No
5 Question 5
Is x = 3 a function- A) Yes
- B) No
6 Question 6
Is x = y2 a function- A) Yes
- B) No
7 Question 7
Is x = −2 a function- A) Yes
- B) No
8 Question 8
Is {(1, 5), (2, 5), (3, 5), (4, 5)} a function- A) Yes
- B) No
9 Question 9
Is y = 3x − 2 a function- A) Yes
- B) No
10 Question 10
Is {(5, 1), (3, 2), (1, 3), (−1, 4), (−3, 5)} a function- A) Yes
- B) No