When an equation is in the slope intercept form, y = mx + b, then m is the slope. Lines with the same slope are parallel (or maybe the same line.)
y = (1/4)x + 2; the slope is 1/4
y=4; (same as y= 0x +2; the slope is 0
y=4x; the slope is 4
y=(1/4)x; the slope is 1/4
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