Systems with the inverse matrix 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.
- 0 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
Solve 2x + y = 5, x + y = 3 using the inverse matrixType the answer.
2 Question 2
Solve 3x + 2y = 7, x + y = 3 using the inverse matrixType the answer.
3 Question 3
Solve 2x + 3y = 12, x + 2y = 7 using the inverse matrixType the answer.
4 Question 4
Solve 3x + y = 7, 2x + y = 5 using the inverse matrixType the answer.
5 Question 5
Solve 4x + 3y = 2, x + y = 1 using the inverse matrixType the answer.
6 Question 6
Solve 3x − 2y = 4, −x + y = −1 using the inverse matrixType the answer.
7 Question 7
Solve 2x + 5y = 1, x + 3y = 0 using the inverse matrixType the answer.
8 Question 8
Solve 3x + y = 5, x + y = 3 using the inverse matrixType the answer.
9 Question 9
Solve 2x + y = 1, x + y = 2 using the inverse matrixType the answer.
10 Question 10
Solve 2x + 2y = 6, x + 3y = 7 using the inverse matrixType the answer.