# Exam Review

### I hope this is helpful!

## Take a look at these videos and examples:

Simplifying Expressions:

Solving Equations:

Solving equations with fractions:

2 other suggestions for solving equations with fractions:

1) Turn all fractions into decimals and solve like you would with integers.

Subtract .25 from both sides of the equation

.3333x + .25 = .75

__ - .25 = -.25__

.333x = .50

Divide both sides by .333 so x = =1.5

2) Multiply the equation by a number that will get rid of all of the denominators.

Writing the equation of a line given 2 points:

(3, 4) and (6, 10)

1) Find the slope (m). Change in the Ys over Change in the Xs

2) Pick one of the two points. It does not matter which one. I will chose (3, 4) because I like smaller numbers J

3) You now have a Y and an X and an M so you can substitute into the equation of a line y=mx+b

y = 4 x = 3 and m = 2

4= 2(3) +b

4 = 6 + b

__-6 -6 __

-2 = b

So y=mx + b à y = 2x - 2

Finding the equation of a line given a point and a parallel line:

Finding the equation of a line given a point and a perpendicular line: