Example 2: | Solve |
x + y = 6 | |
y = x |
Equations in slope-intercept form appear below.
x + y = 6 becomes y = 6 - x
slope = -1
y-intercept = 6y = x is already in slope-intercept form
slope = 1
y-intercept = 0The graph appears like that below:
When we check our answer we get the work below.
x + y = 6 x = 3 and y = 3 (3) + (3) = 6 6 = 6 True |
y = x x = 3 and y = 3 3 = 3 True |