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Mathematics 83 Online
princeevee:

i need some help

princeevee:

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princeevee:

its like you waited an eternity.

dude:

SmAEkfFIThGfYzDuP8BSUA.png 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

princeevee:

okay

princeevee:

since D is the only answer with B being closest to 5, then that's the answer?

dude:

Right

princeevee:

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dude:

Substitute 5 into the equation

princeevee:

as X or Y?

princeevee:

i got 2123.1

dude:

x, because x is age

princeevee:

yeah, that was the answer i got from that

dude:

Hmm, re-check \(y=6.3(5)+67.4\)

princeevee:

oh.

princeevee:

A

dude:

Yes

princeevee:

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dude:

Do you think its C?

princeevee:

that's what i'm thinking

dude:

Check again, to prove substitute the given x and y values \(x=2, y=16\) \(16=0.26(2)-16.9\)

princeevee:

-16.38?

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

princeevee:

0.26?

dude:

I goofed on this https://www.desmos.com/calculator/09kgz20q7x Just refer to the graph, it should help

princeevee:

ah, so B

dude:

Right

princeevee:

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dude:

What makes you think C

princeevee:

tbh i still dont know

princeevee:

@dude ?

dude:

0.728 is a percent, its not C

princeevee:

so A? since its the percent form of the decimal?

dude:

Right

princeevee:

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princeevee:

so it is D, b is near 5.1

dude:

No no, look for the r value

princeevee:

oh, C

dude:

Yes

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