Precalculus Examples

x = y + 2

$x = y + 2$

Step 1

Rewrite the equation as

y + 2 = x

$y + 2 = x$ .

y + 2 = x

$y + 2 = x$

Step 2

Subtract

2

$2$ from both sides of the equation.

y = x - 2

$y = x - 2$

Step 3

To rewrite as a function of

x

$x$ , write the equation so that

y

$y$ is by itself on one side of the equal sign and an expression involving only

x

$x$ is on the other side.

f (x) = x - 2

$f (x) = x - 2$

Enter YOUR Problem