Archimedes

=__Archimedes__ =

slope formula (rate of change)  definitions: __rate of change__=change of dependant variable over independant variable

__slope__= rise over run

__slope formula__= (y2-y1) / (x2-x1)

= = = =  Rate of Change


 * # of days || total cost ||
 * 1 || $60 ||
 * 2 || $75 ||
 * 3 || $90 ||
 * 4 || $105 ||

__75-60__ 2-1

__15__ 1 so $15 dollars per day after day 1 Slope Formula  Step 1: First you pick two points (1,2) and (-2,-4)

Step 2:next you plug in the points into the formula m=(y2-y1) / (x2-x1)

Step 3:Now you have m=(2-(-4) / (1-(-2)

Step 4:m=6/3 which =2