Replace x with 18, solve the equation. If it equals -4 it’s a solution.
Y = -6(18) - -87
Y = -108 + 87
Y = -21
-21 does not equal -4 so (18,-4) is not a solution.
Isnt there a youtube video with that? Im not sure... But thats where ill look for proof.. :)
Reflected
Probably shouldn't put this as a math question
2 words are Right Triangle, Isosceles.
All you have to do is 14*.30 which equals to $4.20