7400320167 | math4u.vsb.cz

Submitted by michaela.bailova on Tue, 11/05/2024 - 16:20

Question:

Find all systems of linear equations with variables

a

and

b

such that

a - b = 3

.

Project ID:

7400320167

SubArea:

Systems of linear equations and inequalities

Answer 1:

\begin{aligned} 2 a + b & = 9 \\ a - 2 b & = 2 \end{aligned}

Answer 1 Correct:

1

Answer 2:

\begin{aligned} a + 2 b & = - 3 \\ 2 a + b & = 0 \end{aligned}

Answer 2 Correct:

1

Answer 3:

\begin{aligned} 2 a - b & = 3 \\ a + b & = - 3 \end{aligned}

Answer 3 Correct:

1

Answer 4:

\begin{aligned} 2 a + b & = 2 \\ a - 2 b & = 6 \end{aligned}

Answer 4 Correct:

0

Answer 5:

\begin{aligned} a + 2 b & = - 1 \\ 2 a + b & = 1 \end{aligned}

Answer 5 Correct:

0

Answer 6:

\begin{aligned} 2 a - b & = 5 \\ a + b & = 4 \end{aligned}

Answer 6 Correct:

0

Answer 7 Correct:

0

Answer 8 Correct:

0