Find k 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.
- 4 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
2x + 3y = 6 and 4x + ky = 5 have no solution. Find k.- A) k = 6
- B) k = 2
- C) k = 3
2 Question 2
x + y = 4 and 2x + ky = 3 have no solution. Find k.Type the answer.
3 Question 3
x + 3y = 2 and 2x + 6y = k have infinitely many solutions. Find k.Type the answer.
4 Question 4
x + y = 7 and x + ky = 2 have no solution. Find k.Type the answer.
5 Question 5
2x + 5y = 3 and 6x + ky = 9 have infinitely many solutions. Find k.- A) k = 15
- B) k = 3
- C) k = 5
6 Question 6
2x − 3y = 1 and −4x + ky = 7 have no solution. Find k.Type the answer.
7 Question 7
4x − y = 2 and 8x + ky = 3 have no solution. Find k.- A) k = 2
- B) k = −2
- C) k = −1
8 Question 8
x + 4y = −2 and 3x + ky = −6 have infinitely many solutions. Find k.Type the answer.
9 Question 9
Kx − 4y = 6 and 3x − 2y = 1 have no solution. Find k.- A) k = 3
- B) k = −6
- C) k = 6
- D) k = 2
10 Question 10
3x − 5y = 2 and −6x + ky = −4 have infinitely many solutions. Find k.Type the answer.