How do you graph the line $x-2y=4$ by using intercepts?

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Answer 1 · 2016-03-25T22:02:54

The x-intercept is $(4,0)$
The y-intercept is $(0,-2)$ graph{x-2y=4 [-10, 10, -5, 5]}

The x-intercept always has a y value of $0$ . So simply substitute $0$ in place if $y$ in your equation and you can calculate the x-intercept.

$x-2y=4$ substitute $0$ for $y$
$x-2(0)=4$
$x=4$ . The x-intercept is $(4,0)$

Similarly, the y-intercept always has an x value of $0$ . This time, substitute $0$ in for $x$ in your equation.

$x-2y=4$

$0-2y=4$

$-2y=4$

$y=-2$ . So the y-intercept is $(0,-2)$

How do you graph the line x-2y=4x-2y=4 by using intercepts?