# How do you determine whether y=2x -1 is a linear equation. If so, write the equation in standard form?

Nov 23, 2016

$2 x - y = 1$

#### Explanation:

The equation of a straight line can be written in several forms.

$y = m x + c$ is one of them.
$y = 2 x - 1$ is in this form, therefore it is a linear equation.

It has an $x$ term, a $y$ term and a constant.

Re-arrange it to get standard form.

$2 x - y = 1$

Other forms are:

General form: $2 x - y - 1 = 0$
Slope-intercept form is $y = 2 x - 1$