Download Ax + By = C 4x 6 = 8x

Warm Up
CRCT review:
1) 32
2) 3-2
You will need a sheet of notebook paper and the yellow note page for class today!
Homework Answer Key...
1.) (5, 1)
2.) (1, 4)
3) 5x-4
4) x5
x2
3.) (­4, ­2)
4.) (2, ­2) How do I put an equation in
STANDARD FORM???
What is STANDARD FORM?
Ax + By = C
...basically x and y are together on the same
side of the equal sign.
Example:
4x ­ 6 = 8x
your
teacher...lol
Solving by elimination: JUST WATCH!!!
2x - 3y = -1
2x + 2y = -2
Yipee! It's "systems of equations"!
Is (14, 5) a solution for
x + 14y = 84
2x - 7y = -7 ??
your
teacher...lol
*elimination is sometimes called combinations or addition method.
Now you try...
on your yellow sheet...
-8x - 2y = 0
x + 2y = -7
on notebook paper...
3x + 2y = 7
-3x + 4y = 5
Hint... put in standard form first! Get x and y together on the
same side of the equal sign.
-3y = 12 - 2x
4x + 3y = 24
on notebook paper...
You are on your own, sweet babies! =)
solve away...
Homework~ W-S #6
Elimination Using Addition and
Subtraction: Problems (1-10)
5x + 2y = 7
-4x + y = -16