F(-1) is the inverses of an equation so plug in y for x.
Answer:
A
Step-by-step explanation:
it is A because the graph move from a negative axis and move to positive axis at the top
You have given just one of the equations, and I guess you are looking for a formula for solving all linear equations.
I"d suggest looking at Cramer's rule for such a formula.
http://www.1728.org/cramer.htm
