How do you graph 4x+y=0?

2 Answers
Mar 5, 2018

graph{y=-4x [-10, 10, -5, 5]}

Explanation:

To solve this equation, first move the 4x to the other side to make the y by itself. Do this by subtracting 4x from each side.

y+4x-4x=0-4x

Simplify

y=-4x

Once you simplify, plug in random values for x (1, 2, 3, "etc") and then the answer you get is your y value. You can use the graph for help.

Example:

x = 2 => y=-4(2) =-8

So

x = 2, y = -8

Mar 5, 2018

See explanation.

Explanation:

4x+y=0
y=-4x

Since the equation has the form of y=ax, we conclude that the graph will be a straight line passing through the (0,0) point.

You then insert 2 values for x (x_1,x_2) and get 2 values for y (y_1,y_2).

So you have 2 coordinates: (x_1,y_1) and (x_2,y_2).

You mark them as points and draw a straight line that passes through both points and the (0,0) point.

graph{y=-4x [-10, 10, -5, 5]}