Linear Algebra Examples

$3 x + 1 y = 3$

Step 1

Multiply $y$ by $1$ .

$3 x + y = 3$

Step 2

Subtract $3 x$ from both sides of the equation.

$y = 3 - 3 x$

Step 3

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$

Step 4