Algebra 1 Elimination part 1 Exit Slip

When using the elimination method, you...

• add or subtract one equation from the other to completely eliminate one of the variables

• add or subtract one equation from the other to make both variables bigger

• add or subtract one equation from the other to make both variables disappear

• substitute a value from one equation into the other.

For elimination method, what for do both equations need to be in?

• slope-intercept form (y = mx + b)

• standard form (ax + by = c)

• point-slope form (y-y1) = m(x - x1)

• slope formula form (y2 - y1) / (x2 - x1)

If you have this system of equations, what would you do to eliminate the x variable?

       $3x\ -\ 4y\ =\ 12$  

 $-3x\ +\ 2y\ =\ 8$  

• add the equations together

• subtract the top equation from the bottom equation

• subtract the bottom equation from the top equation

• Multiply the bottom equation by 2 and then add them together.