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| Linear Equations in One Variable |
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ax+b=0
Example: 2x-4=0
+4=+4
2x=4
x=2 |
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Has same thing on both of the equal sides
Example: x/3x^2=1/3x
1/3x=1/3x |
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| Finding x and y intercepts |
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To find y, let x=0 and to find x, let y=0
Example: (8x/3)+5-2y=0
Let x=0 (8(0)/3)+5-2y=0
-2y=-5
y=5/2
Let y=0 (8x/3)+5-2(0)=0
(8x/3)+5=0
(8x/3)=-5
8x=-15
x=-15/8 |
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Only works for zero!
If ab=0, then a =0 or b=0 |
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