Mathematics
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OpenStudy (narissa):
please help!!
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OpenStudy (narissa):
OpenStudy (skullpatrol):
Any ideas?
OpenStudy (narissa):
umm i think i add the x values into the equation like this y=|-4+2|-1?
OpenStudy (narissa):
u there @skullpatrol ?
OpenStudy (skullpatrol):
Yes, you are exactly right: replace the "X" with the given number then simplify :-)
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OpenStudy (skullpatrol):
What is -4 + 2 = ?
OpenStudy (narissa):
-2
OpenStudy (skullpatrol):
Now take the absolute value
OpenStudy (narissa):
2?
OpenStudy (skullpatrol):
| -2 | = 2
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OpenStudy (narissa):
okay so do i put 2 for y?
OpenStudy (skullpatrol):
You still have to subtract 1, right?
OpenStudy (narissa):
yes 1 would be my answer right?
OpenStudy (skullpatrol):
Yes, y = 1 for x = -4.
OpenStudy (narissa):
what about (x,y) what do i have to do with that?
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OpenStudy (skullpatrol):
(-4, 1)
(x, y)
OpenStudy (narissa):
oohh okay ty so much i think i got it
OpenStudy (narissa):
for the rest of them would all the y values be 1?
OpenStudy (skullpatrol):
No, you must now go through each of the given points and calculate the corresponding y value.
OpenStudy (narissa):
oh yeah sorry i was confused for a sec lol
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OpenStudy (skullpatrol):
Then plot each point on the x-y coordinate plane.
OpenStudy (narissa):
okay just finished doing them all so the answer i got is (-4,1) (-3,2) (-2,1) (-1,0) (0,1) am i correct?
OpenStudy (skullpatrol):
Plot them to see if you get a "V-shaped" graph.
OpenStudy (narissa):
ok
OpenStudy (narissa):
nope :/ let me try again
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OpenStudy (narissa):
hmm this is more difficult than i thought ~_~
OpenStudy (skullpatrol):
Keep trying
OpenStudy (narissa):
can you please help me with the second one
OpenStudy (narissa):
|-3+2|-1
OpenStudy (skullpatrol):
For x = -3 you should get y = 0 since | -1 | = 1
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OpenStudy (narissa):
so i should get -3,0 or -3,1?
OpenStudy (skullpatrol):
( -3 , 0 )
OpenStudy (narissa):
okay i got that for #3 |-2+2|-1 i got -2,1 is that correct
OpenStudy (skullpatrol):
Nope.
OpenStudy (skullpatrol):
What is 0 - 1 = ?
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OpenStudy (narissa):
-2+2= 0 0-1=-1
OpenStudy (skullpatrol):
Yes, keep going :-)
OpenStudy (narissa):
y is -1? but i thought the bars keep it from being negative?
OpenStudy (skullpatrol):
$$\Huge y = | x + 2 | - 1$$
OpenStudy (skullpatrol):
Only what is inside the bars stays positive, right?
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OpenStudy (narissa):
ok
OpenStudy (narissa):
it made a V shape thanks for your help can you check one of my papers?
OpenStudy (skullpatrol):
Y is the result of the entire calculation on the right hand side of the equation :-)
OpenStudy (narissa):
ill post it in another post so u can get a extra medal
OpenStudy (skullpatrol):
np, try your best to finish
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OpenStudy (skullpatrol):
I'm not here for the medals :-)
OpenStudy (narissa):
okay i posted another question i tagged u i just need you to check it