Systems of Equations Review

Example 1 - Collect like terms/simplify:
a) 3x + 2 (1-x) = x + 2

b) 3(2y - 1) - (4y + 3) = 6y - 3 - 4y - 3 = 2y -6

Example 2 - Solve:
a) x - 5 = 4 x = 9

b)$$\frac{n}{3}+1=7$$

n + 3 = 21

n = 18

c) $$\frac{3t + 1}{2} = \frac{1}{3} (2t + 6)$$

$$3(3t + 1) = 2(2t + 6)$$

$$9t + 3 = 4t + 12$$

$$5t + 3 = 12$$

$$5t = 9$$

$$t = \frac{9}{5}$$

d) $$\frac{x}{4} + \frac{1}{3} = \frac{-1}{6}$$

3x + 4 = -2

x = -2

Graphing Lines

 * Ways to graph
 * Table of values
 * Slope y-intercept form
 * x and y intercept form
 * x intercept means y = 0
 * y intercept means x = 0