1. How to solve a linear equation
2. How to solve a literal equation
3. How to write an equation of a line in 3 forms. 

ISOLATE THE VARIABLE!

5n + 11 = 7n - 9          Subtract 5n from each side

11 = 2n - 9                  Add 9 to each side

20 = 2n                       Divide each side by 2

10 = n                         Bingo

WORK IT OUT!

P =  2L + 2W            Subtract 2L from each side 

P - 2L = 2W     &         Divide each side by 2

(P - 2L)/2  = 2W   &nbssp;  Bingo
 
 
 

Dont Run From Your Homework.
 

SLOPE-INTERCEPT FORM (Given the slope m and the y-intercept b, use this equation): 

y = mx + b

POINT-SLOPE FORM (Given the slope m and a point (x₁,y₁), use this equation): 

y - y₁ = m(x - x₁)

TWO POINTS (Given two points (x₁,y₁) and (x₂,y₂), use this formula: m = 

(y₂ - y₁)/(x₂ - x₁)