Communicative prop of multiplication because the numbers are moving
The slope is 5/1. This is because it goes up 5 units and right one unit. This corresponds with the fact that slope is the rise/run on a line.
( x, y ) → ( x-3, y+4 )
A ( 1, 1) → A' (1-3, 1+4) A' (-2, 5)
Ask: When will (4w-5)(7-w) equal zero?
When 4w-5=0 or 7-w=0
Solve each of the 2 equations above
w = 5/4 , 7
When you have lines in graphs for ex
Y=2x+7
2x is the rate of change
7 is the instant amt if the x=0 (or the y-intercept)