Solve for x:
Linear Equations
Linear Equations (part 2):
Systems of equations:
Systems of equations (part 2):
100
2x = -26
-13
100
What does linear mean?
Makes a straight line
100
What is the slope of this equation?
y=-(7/8)x - 2
-(7/8)
100
What are the 3 methods of solving system of equations?
Substitution, elimination, and graphing
100
Solve the system of equation:
7x + 2y = −19
−x + 2y = 21
(-5,8)
200
-x + 5 = 10
-5
200
Name the two forms of linear equations:
y=mx + b
Ax + By = C
Slope-Intercept form
Standard Form
200
What is the y-intercept of this equation?
y=-(7/8)x - 2
-2
200
What is the solution to this system of equation?
(1,-3)
200
Solve the system of equation:
4x − y = 20
−2x − 2y = 10
(3,-8)
300
-(3/5)x = (4/5)
-(4/3)
300
What do the m and b stand for in y=mx + b?
Slope and y-intercept.
300
Find the slope of these two ordered pairs:
(-3,2) and (6,4)
2/1 or 2
300
Solve the system of equations:
y = x + 2
x = −3
(-3,1)
300
What is the solution to this system of equation?
No solution
400
5(2x - 1) = 4x + 2
(7/6)
400
Why are A, B, and C uppercase in Ax+By=C?
Because they should all be integers.
400
What is the slope of:
6x + 7y = 23
-(6/7)
400
Solve the system of equation:
y = −3x + 4
y = 3x − 2
(1,1)
400
Solve the system of equation:
−4y − 11x = 36
20 = −10x − 10y
(-4,2)
500
y=mx + b
x =(y-b) /m
500
What is the equation of this line?
y=-3x+2
500
What are the x and y intercepts of this equation:
6x + 7y = 23
y-intercept: (0, 23/7)
x-intercept: (23/6, 0)
500
Solve the system of equation:
x − y = 3
7x − y = −3
(-1,-4)
500
Solve the system of equations:
−16 + 20x − 8y = 0
36 = −18y − 22x
(0,-2)