Solving by Substitution
Solve the systems of equations:
-3x + 4y = -2
y = -5
(-6, -5)
Solve the systems of equations:
14x + 2y = 26
-14x - 6y = -50
(1, 6)
What strategy should you use?
14x + 2y = 26
-14x - 6y = -50
elimination
What period is this?
8
Which direction does the sun rise?
east
Solve the systems of equations:
-5x - 5y = 10
y = -4x -17
(-5, 3)
Solve the systems of equations:
-3x - 3y = 24
-12x + 9y = 12
(-4,-4)
Amy bought 2 new shirts and a dress for $45. She then went back and bought another shirt and 4 dresses for $70.
Write a systems of equations for the situation.
2x + y =45
x + 4y = 70
15*3
45
Who won The World Series?
LA Dodgers
Solve the systems of equations:
y = -2x - 9
3x -6y = 9
(-3, -3)
Solve the systems of equations:
-12x - 4y = -12
3x + 2y = 3
(1,0)
Joe went to Dunkin and bought one coffee and a bagel, her total was $7. Stephen went to Dunkin and bought 2 coffees and 3 bagels and spent $18.
Write a systems of equations for this situation.
x + y = 7
2x + 3y = 18
What is this room number?
444D
In GREEK mythology, who was the god of the sea?
Poseidon
Solve the systems of equations:
-8x - 5y = -24
y = 10 + x
(-2, 8)
Solve the systems of equations:
-3x - 24y = -66
3x + 4y = -14
(-10, 4)
What is 5,376 divided by 96?
56
A school is organized a trip to the movies. There are 180 students and teachers going on school buses. Each school bus holds 45 passengers. How many buses are needed to transport the students and teacher to the trip?
4
When did World War 2 begin?
September 1, 1939
Solve the systems of equations:
y = -4x - 23
2x + 8y = -4
(-6,1)
Solve the systems of equations:
-15x + 6y = -36
4x - 3y = 11
(2, -1)
How many solutions does the system have?
3y + 4x = 6
12y + 16x = 24
These are the same exact line, therefore they have
Infinite Solutions
Solve the following System of Equations
-6y + 2 = -4x
y - 2 = x
First step, substitute the x into the top equation.
(-5,-3)
What is the next holiday we have off?
Veterans Day