Solving Using Elimination
5x + y = 21
-8x + y = - 18
(3,6)
2x - 3y = 22
2x + 5y = 6
(8,-2)
List out all the steps to solve an equation.
Distribute
Combine Like terms
Move the variable
Add / Subtract
Divide / Multiply
What room number is Mr. Alcazar in?
Room 402
4x + y = - 5
x + y = - 8
(1,-9)
5x - y = 15
5x - y = 20
No Solution
What are the first two things you look for when solving an System by Elimination
1. Are the terms lined up vertically
2. Are there any matching coefficients.
How many days of school do we have left? (Not counting today)
30
x - y = -2
3x - y = -8
(-3,-1)
4x + 7y = 6
-5x + y =12
(-2,2)
What does this stand for:
PEMDAS
Parenthesis
Exponents
Multiply
Divide
Add
Subtract
When was TCHS founded? (NO GOOGLING)
1991
x + y = 6
2x + 2y = 12
Infinite Solutions
x + 5y = -23
x - y = 1
(-3,-4)
Solve the equation:
6(6v+6)-5=1+6v
v = -1
What are our official School colors?
Blue, White, Silver
x - 4y = -5
5x +3y = 44
(7,3)
3x - 8y = 6
5x - 16y = 18
(-6, -3)
Solve the Equation:
-10x + 3(8+8x) = -6(x-4)
x = 0
2 Dogs