1. 5x-3y=-2

-x-2y=3

Use elimination to solve each system

1. 4x-3y=-1

x+2y=19

2. x+2y+z=5

2x+y-3z=-2

3x+y+4z=-5

3. 3x-2y+z=6

3x+y-z=-4

-x+2y-2z=-8

4. x-2y+4z=6

x+y+13z=6

-2x+6y-z=-10

5 2x+y+3z-2w=-6

4x+3y+z-w=-2

x+y+z+w=-5

-2x-2y+2z+2w=-10

6. x+y+z+w=-1

-x+4y+z-w=0

x-2y+z-2w=11

-x-2y+z+2w=-3

Given an equation of a line, find it slope and intercepts.

y-2=4(x-3) and 2x-4y=8

Graph the straight line given the equation:

y=4x-6 and 5x+3y=-15

Write equations of lines given certain conditions:

Given 2 points what is the equation? Write the equation of a line parallel to y=3x-4 and thru (8,-2)

Solve a system of linear equations:

1. 2x-7y=12 and y=3x+8 (2 by 2)

2. 5x-6y=12 and 4x+3y=-10 (2 by 2)

3. x+2y+z=5 and 2x+y-3z=-2 and 3x+y+4z=-5 (3 by 3)

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## This question was asked on Jan 19, 2013 and answered on Jan 20, 2013.

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