SOLUTION: How do I graph the linear equation: x+y=4

Algebra ->  Linear-equations -> SOLUTION: How do I graph the linear equation: x+y=4      Log On


   

Question 662835: How do I graph the linear equation: x+y=4
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x%2By=4...in slope-intercept form: y=-x%2B4
find x-intercept: set y=0
x%2B0=4
x=+4..........x-intercept is at (4,0)...that is one point

find y-intercept: set x=0
0%2By=4
y=+4..........y-intercept is at (0,4)...that is second point

plot these two points and draw a line through

+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-x+%2B+4%29+