- What
do m and b represent in y = mx + b ?
m = slope; b = y-intercept.
- What
are the slope and y-intercept of this graph?
m = 2/3; b = -1
- What
is the equation of the previous graph? y = (2/3)x - 1
- Graph
y = 0.5x + 1
- Graph
y = x - 5
 (slope = 1)
- Graph
y = 1
 (horizontal line
through y = 1).
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