How do you graph 2x+y=0?

1 Answer
Jan 26, 2016

See graph

Explanation:

We can see that the equation represents a straight line. Also that
Two points are sufficient to draw a straight line.

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

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

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

  3. 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]}