The equation is in the form y = mx + b.
What is the slope and y-intercept of this equation?
What is equal to y in the equation 5x - 5y = 10?
Solution: y = x - 2
Graphing a Linear Equation using intercepts.
Graph 3x - 2y = 6 using the intercepts.
3x - 2(0) = 6
x = 2
3(0) - 2y = 6
y = -3
Classifying Lines Using Slopes
A. (-4, 6), (-2, 10)
m = 10 - 6 // -2 - (-4) = 4/2 = 2 (Because m is positive, the line goes up)
B. (-8, -2), (4, -2)
m = -2 - (-2) // -4 - (-8) = 0/12 = 0 (Because m = 0, the line is horizontal)
C. (12, -4), (12, -6)
m = -6 - (-4) // 12 - 12 = -2/0 = -2 (Because m is undefined, the line goes straight up vertically)
