Mathematics
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princeevee:
i need some help
5 years ago
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princeevee:
5 years ago
princeevee:
its like you waited an eternity.
5 years ago
dude:
The y-intercept may help you find the equation
The equation of a line is written as \(y=mx+b\) and b the the y-intercept
So we know that the b should be around 5
5 years ago
princeevee:
okay
5 years ago
princeevee:
since D is the only answer with B being closest to 5, then that's the answer?
5 years ago
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dude:
Right
5 years ago
princeevee:
5 years ago
dude:
Substitute 5 into the equation
5 years ago
princeevee:
as X or Y?
5 years ago
princeevee:
i got 2123.1
5 years ago
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dude:
x, because x is age
5 years ago
princeevee:
yeah, that was the answer i got from that
5 years ago
dude:
Hmm, re-check
\(y=6.3(5)+67.4\)
5 years ago
princeevee:
oh.
5 years ago
princeevee:
A
5 years ago
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dude:
Yes
5 years ago
princeevee:
5 years ago
dude:
Do you think its C?
5 years ago
princeevee:
that's what i'm thinking
5 years ago
dude:
Check again, to prove substitute the given x and y values
\(x=2, y=16\)
\(16=0.26(2)-16.9\)
5 years ago
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princeevee:
-16.38?
5 years ago
dude:
Not sure what you did
\(16=0.26(2)-16.9\)
\(16=-16.38\)
This is not true so its not the right answer
try the first equation
5 years ago
princeevee:
0.26?
5 years ago
princeevee:
ah, so B
5 years ago
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dude:
Right
5 years ago
princeevee:
5 years ago
dude:
What makes you think C
5 years ago
princeevee:
tbh i still dont know
5 years ago
princeevee:
@dude ?
5 years ago
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dude:
0.728 is a percent, its not C
5 years ago
princeevee:
so A? since its the percent form of the decimal?
5 years ago
dude:
Right
5 years ago
princeevee:
5 years ago
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princeevee:
so it is D, b is near 5.1
5 years ago
dude:
No no, look for the r value
5 years ago
princeevee:
oh, C
5 years ago
dude:
Yes
5 years ago