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
Is the given point a solution to the system of equations?
Point: (-1,-3)
x + y = 8
3x - y = 0
NO
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
What is Stewie's favorite number?
13
Which chemical element has the symbol Pt on the periodic table?
Platinum
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 do the following words have in common: isosceles, equilateral, and scalene?
Triangles
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)
How many solutions does a system that makes parallel lines on a graph have?
No Solutions
What is the largest desert in the world?
Antarctica
Defined as a desert due to the very low amount of precipitation received.
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 was the name of the crime boss who was head of the feared Chicago Outfit?
Al Capone