Today we did more on functions
What Is a Function you ask?
A function is a special type of relation where each x-value in the domain corresponds to ONLY 1 y-value in the range.
example: Graph f(x)= x-1 means the same as y=x-1
y-intercept --> f(0)=x-1
the zeros of the function are the x-intercept(let y=0)
to find zero let F(x)= 0
Graph, find D and R and the zeros for f(x)=3/2x-3
linear functions f(x)=mx+b
constant functions f(x)=b <-- has no x value
will always be a straight line.
HOMEWORK: ex. 54 # 1-9, 12
55 # 1-7