Substitution
Solve the system by Substitution Method
7x - 4y = 24
x +8y = 72
( 8, 8)
Solve the system by EITHER Substitution or Graphing Method
-5x = -y - 3
y -x = 5
( 2, 7)
Solve the system by Graphing Method
2x - y = 1
5x +2y = 16
( 2, 3 )
Solve the system by BOTH Methods
x - y = 7
4x + y = -2
( 1, -6)
What type of slope is x=3?
vertical line, so undefined
Solve the system by Substitution Method
y = x - 2
y = 4x + 4
( -2 , -4 )
Solve the system by EITHER Substitution or Graphing Method
x + 4y = -12
3x + 2y = 4
( 4 , -4 )
Solve the system by Graphing Method
y = -2/3x + 1
y = 2/3x -3
( 3 , -1 )
Solve the system by BOTH Methods
x = -1
y = x - 1
(-1 , -2 )
What does it mean to be a solution to a system of equations?
The values that make both equations true.
What is the term shown below?
4(3x + 2)=18
12x + 8 =18
Distributive Property/Distributing
What is the number that's attached to a variable called?
Coefficient
What is the slope of y= 100?
horizontal ,so zero slope
What is the term shown below?
3x + 3 + 8 + 12x -6 = 14
15x + 5 = 14
Combine Like Terms
What is slope formula?
y2-y1/x2-x1
Solve the system by Substitution Method
15 = 3y + x
3y = -10x - 12
( -3 , 6 )
Solve the system by EITHER Substitution or Graphing Method
x = -3
x -3y = -12
(-3 , 3)
Solve the system by Graphing Method
3x - y = -2
2x + y = 7
( 1,5 )
Solve the system by BOTH Methods
y = -1/4x + 4
y = 1/2x + 1
( 4, 3 )
What is an x-intercept?
When the graph hits the y-axis
Solve the system by Substitution Method
x +5y = -35
x+ 5y = 5
No Solution
Solve the system by EITHER Substitution or Graphing Method
y = 1/3x + 4
y = -2x - 3
( -3 , 3 )
Solve the system by Graphing Method
x + 2y = 14
4x +y = -7
( -4, 9 )
Solve the system by BOTH Methods
5x + y = 7
5x +y = -4
No solution
What is standard form?
Ax + By = C