How do you graph $-2x+5y=15$ ?

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Answer 1 · 2017-06-18T21:39:56

That is a line; plot any two points on it.

(x, y) lies on the line $-2x + 5y = 15$
if and only if the values of x and y solve the equation. That is, they make it true.

If you are using paper (and not a computer), two of the easiest points to find are the intercepts.

A graph has an x-intercept when y = 0.
When y = 0 in this case,
$-2x + 5(0) = 15$
$-2x = 15$
$x = -15/2 = -7.5$

This means that $(-7.5, 0)$ is on the line. Mark it on the map.

I'll leave the rest to you. Find the y-intercept by determining the point where x = 0.

How do you graph -2x+5y=15-2x+5y=15?