Gurpinder wrote:what are the 2 values for this eq.
22-|y+14|=20
22-20 = |y+14|
y+14 = 2 or y+14 = -2
answer is -16,-12
absolute value
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phillybeat
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22-20 = |y+14|
y+14 = 2 or y+14 = -2
answer is -16,-12
You should always try to seperate the absolute value from the rest of the equation.
22-|y+14|=20
--> |y+14|=+2
2 can be either negative or positiv. It is easier if you think of
|y|=2
Now you can visualize
| | |
-2 0 2
--> So y can be either -2 or 2.
If you subtract the number 14. You get:
| | |
-16 -14 -12
--> So y can be either -16 or -12.
22-|y+14|=20
--> |y+14|=+2
2 can be either negative or positiv. It is easier if you think of
|y|=2
Now you can visualize
| | |
-2 0 2
--> So y can be either -2 or 2.
If you subtract the number 14. You get:
| | |
-16 -14 -12
--> So y can be either -16 or -12.
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Gurpinder
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Ok I see that |y| = +- x
But in this question,
22 - |y+14|=20
--> |y+14|=+2
what happens to the - sign in front of |y+14| ??
But in this question,
22 - |y+14|=20
--> |y+14|=+2
what happens to the - sign in front of |y+14| ??
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
- Alfred A. Montapert, Philosopher.
Well you can just multiply it by (-1).Gurpinder wrote:Ok I see that |y| = +- x
But in this question,
22 - |y+14|=20
--> |y+14|=+2
what happens to the - sign in front of |y+14| ??
22-|y+14|=20
-|y+14|=20-22
-|y+14|=-2 |*(-1)
|y+14|=2
