Nathan's blog

So, we went back to algebra 2 for the new year and the concepts are very easy, but as always with B-Rob, every thing gets pushed to the next level and it can get difficult at some points. In section 1, we learned about domain and range, section 2 was on.......i forgot, and section 3 dealt with symmetry and all that good stuff.

There were some formulas that you need to know for section 3:
1.) Y-axis - You have to plug in (-x)
2.) X-axis - You have to plug in (-y), then simplifiy; if the equations are equal then it has symmetry.
3.) Origin - You have to plug in (-x) and (-y)
4.) Y=X - You have to switch x and y, and then solve for y.

Section 4-1 dealt with domain and range, and finding the zeros.

y=4x^2+6x-7
D:(-∞,∞)
R:
Zeros:(x+7)(x-1)
x=-7,1

That's all for this blog, see everyone on Tuesday.