Math Notes

Adding or Subtracting equations.

2d-3x=30c+4d
- 3d+2x=20x+5d
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-d-5x=-20x-30c-d

Systems of Equations

1. 4c+4y=2
2. 3c+4y=3

1. c=-y+(2/4)

2. 3(-y+(2/4))+4y=3

y= 3/2
c=-1

Function

f(x)=2x-3
f(2)=2(2)-3
f(3)=2(3)-3
f(4)=2(4)-3

x | y
2 | 1
3 | 3
4 | 5

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