Solving systems of equations by elimination

Front

Solve by elimination:
4x+9y=28
-4x-y=-28

Back

(7,0)

Front

4x + 8y = 20
-4x + 2y = -30
Which variable will be eliminated?

Back

The x

Front

Solve by elimination:
7x+y=-9

-3x-y=5

Back

(-1,-2)

Front

What would be the first step in finding the solution with elimination?

4x + 3y = 1

x - 3y = -11

Back

cross out the 3y and -3y

Front

Identify the solution to this system of equations: Options: (4, -1), (-1, 4), (-4, 1), (-4, -1)

Back

(4, -1)

Front

How many solutions does the equation 3x − 3 = −3 + 3x have?

Back

Infinitely Many Solutions

Front

Which variable will be eliminated? Options: x, y

Back

x

Front

What do you have to multiply the first equation by to have the x's be opposite and the same?

Back

-3

Front

Solve the system of Equation (x,y)
x + 4y = –3
 x + 7y = –12 

Back

(9,-3)

Front

What is the slope and the y intercept of the following?
y = 3x - 9

Back

slope = 3
y-int = -9