+130516 l 3s - 8 l = l s - 9 l
Because lal = lal and lal = l-al , we have two equations here
3s - 8 = s - 9 and 3s - 8 = - [ s - 9]
subtract s from both sides 3s - 8 = - s + 9
add 8 to both sides add s to both sides
add 8 to both sides
2s = -1 4s = 17
divide both sides by 2 divide both sides by 4
s = -1/2 s = 17/4
Here's the graph of the intersection points : https://www.desmos.com/calculator/i1i7oyqloz
