Hannah Humphrey

2023-03-02

How to graph $2x+y=0$?

udahnulizwk

Beginner2023-03-03Added 5 answers

The equation appears to be a straight line, as can be seen. Also that

To draw a straight line, just need two points.

However, it is advisable to have three points so that error, if any, while calculating two points on the lines can be cross checked.

For $x=0$, we obtain $y=0$, so origin is a point on the line.

For $x=5$, we obtain $y=-10$, so next point is $(5,-10)$

For $x=-5$, we obtain $y=10$, another point is $(-5,10)$

Plotting these points we get the graph

graph{2x+y=0 [-20, 20, -10, 10]}

To draw a straight line, just need two points.

However, it is advisable to have three points so that error, if any, while calculating two points on the lines can be cross checked.

For $x=0$, we obtain $y=0$, so origin is a point on the line.

For $x=5$, we obtain $y=-10$, so next point is $(5,-10)$

For $x=-5$, we obtain $y=10$, another point is $(-5,10)$

Plotting these points we get the graph

graph{2x+y=0 [-20, 20, -10, 10]}