precalc unit 1 test

even functions

f(-x)=f(x)

(-x, y)

odd functions

f(-x) = -f(x)

(-x, -y)

horizontal asymptotes

degree of num greater = none
degree of dem greater = 0
degree of num and dem greater = coefficent

vertical asymptotes

solve for whatever is in the denominator for x

types of symmetry

x axis : plug (x,-y) into the equation and simplify
y axis: plug (-x,y) into the equation and simplify
origin: plug (-x,-y) into the equation and simplify
y=x: plug (y, x ) into the equation and simplify

how to prove that something is an inverse?

function composition

when finding the zeroes of something, what do you do?

set Y equal to zero