Idon't understand how to do number 14. !

Since both points are on the x- axis the equation of the line would be y= 0.

So the equation to setup is y1-y2 /x1-x2=y/x so y1 is 0 minus y2 which is 0 which equals 0 over x1 which is -3 minus x2 which is 0 equals -3 and so the answer would be 0 over -3 or in graphing points(-3,0)

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8