(0,100)(5,0)...slope formula = (y2 - y1) / (x2 - x1)
rate of change (slope) = (0 - 100) / (5 - 0) = -100/5 = -20
so ur slope = -20 and ur initial value = 100...ur initial value is going to be ur y int. ....ur initial value is what she started out with
y = mx + b...in this form, ur slope is in the m position and ur y int is in the b position.....
slope(m) = -20
y int (b) = 100
therefore, ur equation is : y = -20x + 100
