Graph x+y=4

Problem

x+y=4

Solution

1. Identify the type of equation. This is a linear equation in two variables, which represents a straight line.

2. Solve for y to put the equation into slope-intercept form, y=m*x+b

y=−x+4

3. Determine the y-intercept by setting x=0

y=−(0)+4

y=4

4. Determine the x-intercept by setting y=0

0=−x+4

x=4

5. Plot the points (0,4) and (4,0) on a coordinate plane and draw a straight line passing through both points.

Final Answer

x+y=4⇒y=−x+4

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