Solving equations algebraically

9= -1(-2x+6)

9=2x-6

15=2x

x=7.5

Simplify 5/a+3/a

=8/a

1. Find common denominator (multiply denominator to do so)
2. add or subtract across like normal.

Simplify 4/a-2/3

12-2a/3a

An asymptote is a line that identifies the boundaries of a curve. As of pre caluclus 11, the y asymptote (horizontal)=0. The x asymptote (vertical) is a little bit more complicated. Looking at the y axis, identify where the point of line is at -1 and 1. In between these points is where the x asymptote will be.

Today we reviewed some key points on absolute values:

-The values are ALWAYS positive.

-When graphing, the linear or quadratic equation will never enter the negative area (y.) As shown below, the line reaches 0 on the y axis and reflects up.

This week, we learned how to read a linear equation.

y=2x-1

In this equation, the form is y=mx+b. The b in this situation is -1. This represents the y intercept. The mx in this situation is 2x. This represents the slope. The slope is 2/1 (2 right, 1 up.)