How do you graph $x - y = 4$ ?

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Answer 1 · 2018-03-29T12:07:20

See a solution process below:

First, solve for two points which solve the equation and plot these points:

First Point: For $x = 0$

$0 - y = 4$

$-y = 4$

$color(red)(-1) * -y = color(red)(-1) * 4$

$y = -4$ or $(0, -4)$

Second Point: For $y = 0$

$x + 0 = 4$

$x = 4$ or $(4, 0)$

We can next plot the two points on the coordinate plane:

graph{(x^2+(y+4)^2-0.035)((x-4)^2+y^2-0.035)=0 [-10, 10, -7, 3]}

Now, we can draw a straight line through the two points to graph the line:

graph{(x - y - 4)(x^2+(y+4)^2-0.035)((x-4)^2+y^2-0.035)=0 [-10, 10, -7, 3]}

How do you graph x - y = 4 x - y = 4?