steepness, comparing staircases
5feet, 10feet
slope = 5/5 = 1, 10 /5 = 2, 50/15 = 10/3
slope is vertical change/horizontal change = rize / run
positive slope is uphill, negative slope is downhill
y = mx + b
m is always the slope
b is the y-value of the y-intercept
y = 3x – 7
slope:3
y-intercept:(0, -7)
