Linear Algebra Examples

x + y = 9

$x + y = 9$

Step 1

Subtract

x

$x$ from both sides of the equation.

y = 9 - x

$y = 9 - x$

Step 2

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)

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$

Step 3