Which function table is correct for the rule y=x over 2 + 4
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OpenStudy (anonymous):
You can pick from these charts
thomaster (thomaster):
This function?\[y=\frac{ x }{ 2+4 }\]
OpenStudy (anonymous):
No the +4 is on the outside
thomaster (thomaster):
\[y=\frac{ x }{ 2 }+4\]
thomaster (thomaster):
allright fill in 12 for x. what is the answer?
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OpenStudy (anonymous):
Yes
thomaster (thomaster):
@heyheyhelpme ?
OpenStudy (anonymous):
8
thomaster (thomaster):
no. 12/2=6 +4 = 10
thomaster (thomaster):
So for answer 1, the first x value is correct, now the next one is 4
what do you get for (4/2)+4?
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OpenStudy (anonymous):
I thought you did it all at one time?
thomaster (thomaster):
yes but you need to x/2 first then add the +4
thomaster (thomaster):
so what is y when x=4?
OpenStudy (anonymous):
10
thomaster (thomaster):
how did you come to 10?
\[\frac{ 4 }{ 2 }+4 = 2+4 = 6\]
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OpenStudy (anonymous):
OHHHHHHHHHH
thomaster (thomaster):
if you're doing this with a calculator, do it like this:\[\left( \frac{ x }{ 2 } \right)+4\]
thomaster (thomaster):
so for x=12, y=10 and for x=4, y=6.
for option a there is 1 x value left, 0.
What is y when x=0?
OpenStudy (anonymous):
Yeah
OpenStudy (anonymous):
1
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thomaster (thomaster):
(0/2)+4 = 1 ??????
OpenStudy (anonymous):
No that's not right
thomaster (thomaster):
how many pieces of apple do you get when you cut NO apple in 2?
OpenStudy (anonymous):
0
thomaster (thomaster):
thats true :) now you add 4 apples to the 0 apples you already have :P
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OpenStudy (anonymous):
4
thomaster (thomaster):
yep, what are the y values of funtion table a?
OpenStudy (anonymous):
Table A
thomaster (thomaster):
yes
x=12, y=10
x=4, y=6
x=0, y=4
So the answer to you question is function table A is correct for the rule y= (x/2)+4
thomaster (thomaster):
all of the other tables have at least 1 x values that do not have the correct value for y
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OpenStudy (anonymous):
KK I have more
OpenStudy (anonymous):
Identify the rule for the function table.
y = 3x
y = x + 24<This one
y = x – 24
y = 2x + 12
thomaster (thomaster):
x=12, y=36
x=20, y=44
x=76, y=100
Lets test the first option: y=3x
fill in 12 for x: y=3*12
The answer is 36 so the y value is correct
Next one: x=20 --> y=3*20
The answer is 60, so the first option is not the rule of the function table
second one: y=x+24
y=12+24=36
y=20+24=44
y=76+24=100
All y values are correct, so y=x+24 is the winning function :)
OpenStudy (anonymous):
Which rule matches the function graphed below?
y = x + 3
y = x – 4
y = x – 3
y = x + 4
OpenStudy (anonymous):
+3
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thomaster (thomaster):
Do you have a graphical calculator? If not just put the functions in google it will plot them for you. You'll see that Y=X-3 is correct.
OpenStudy (anonymous):
No
thomaster (thomaster):
OpenStudy (anonymous):
Oh
thomaster (thomaster):
I'd love to help you further but it's 2:30 am so i'm going to sleep now :P
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