anonymous
  • anonymous
how do i write a absolute value equation? absolute value equations are the ones shaped as a v, right?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
With these: | |
anonymous
  • anonymous
thanx :) how abt this. so basically i need to write an absolute value equation for something that the vertex is at (-2.5, 18.5) and has a slope of 1. how do i write that?
anonymous
  • anonymous
y=|(x+2.5)| + 18.5

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anonymous
  • anonymous
thanks a million tropical33!!!!!!!!!!!
anonymous
  • anonymous
another q: with that equation (and in general) how would i figure out how to domain for a piecewise funciton?
shadowfiend
  • shadowfiend
Btw, remember to give a medal if someone is helpful :)
shadowfiend
  • shadowfiend
The domain of a piecewise function is basically all the values for which the piecewise function is specified. So if a piecewise function is valued 1 between 0 and 1, and 2 between 1 and 2, then the domain is 0 to 2. If you post an example we can walk through it.
anonymous
  • anonymous
how do i give someone a medal. the equation is y=|x+2.5|+18.5 I want it to only go up to 20 on the y axis and in bwtn -4 and -1
shadowfiend
  • shadowfiend
Click `Good Answer' to the right of their name in the replies :) Ok, so if it only exists between -4 and -1, then that's the domain of the function :)
shadowfiend
  • shadowfiend
The domain of the function is every x value for which you want your function to exist (or, more precisely, for which your function *does* exist).
anonymous
  • anonymous
so i just write \[-4\le x \le -1\]
shadowfiend
  • shadowfiend
You got it :)
anonymous
  • anonymous
thanx a million!!!!!!! sorry to bother everyone again but... is this the right equation? if i want an upside down abs value thing, with a slope of 3/2 the vertex is (2,20) i would write it y=-|3/2x+2|+20 ?
shadowfiend
  • shadowfiend
I don't have time right this second to draw it out and check it :/ But! Try posting it as a separate question on the left; hopefully amistre or someone else will be able to spot-check it faster than I can.
anonymous
  • anonymous
thx a million for all ur help!!!!!!!!!!

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