Charlie's Weekend Blog.

in advanced math this week we started looking for zeros, functions, domain, and range. we had learned this back in the gap in algebra two.. i know what i'm doing, (for the most part).
there are 3 situations: parabolas, square roots, & fractions.
**in this blog we're just doing parabolas**
to find the domain of the parabolas, the answer is always (-infinity, infinity).
to find the range for the parabolas, the answer is (-infinity, infinity). but only if the largest exponent is odd.
to find the zero, you set the whole given problem up equal to zero.
then, to find if it is a function you plug it into the calculater. & sketch the graph on the paper. then do the straight line test. if it doesn't pass through the graphed shape more than once, then it is a function.

example:
f(x) = 6x + 2
Zeros > -1/3
domain > (-infinity, infinity)
Range > (-infinity, infinity)
function? > yes.

6x + 2 = 0
x = -2/6 = -1/3