Pre-Algebra Examples

$y = 2 x + y$

Step 1

Solve for $y$ .

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Step 1.1

Move all terms containing $y$ to the left side of the equation.

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Step 1.1.1

Subtract $y$ from both sides of the equation.

$y - y = 2 x$

Step 1.1.2

Subtract $y$ from $y$ .

$0 = 2 x$

Step 1.2

The variable $y$ got canceled.

All real numbers

Step 2

Since $x = 0$ is a vertical line, there is no y-intercept and the slope is undefined.

Slope: Undefined

y-intercept: No y-intercept

Step 3