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Mathematics 23 Online
OpenStudy (anonymous):

Model the function rule y = -2x - 3 with a table of values?

OpenStudy (anonymous):

plug in a few numbers for x and solve for y

OpenStudy (anonymous):

Still don't understand..

OpenStudy (anonymous):

What would I plug in and how do I solve for y? I'm really not good with Algebra.

OpenStudy (anonymous):

|dw:1351736026913:dw|

OpenStudy (anonymous):

start out buy drawing this for the sake of being lazy use small numbers for x

OpenStudy (anonymous):

i like to anyways

OpenStudy (anonymous):

so far so good?

OpenStudy (anonymous):

Not really ha this sounds like babble to me. :/

OpenStudy (anonymous):

depending on your teacher he will want 3-5 x values

OpenStudy (anonymous):

lol ok. draw the graph on a piece of paper

OpenStudy (anonymous):

and let me know when your done

OpenStudy (anonymous):

Like the one you've got ^?

OpenStudy (anonymous):

yes, but if you want to change the x values you can

OpenStudy (anonymous):

It doesn't matter as long as they're 3-5?

OpenStudy (anonymous):

pretty much

OpenStudy (anonymous):

eh... I put -3 0 2

OpenStudy (anonymous):

ok now what we need to do is plug these values into x

OpenStudy (anonymous):

lets start with -3 y = -2(-3) - 3

OpenStudy (anonymous):

so what would be the first step to solving this problem?

OpenStudy (anonymous):

Multiply -3 and -2? then subtract 3 from that?

OpenStudy (anonymous):

correct and what do you get?

OpenStudy (anonymous):

Y = -6 - 3 y = -9?

OpenStudy (anonymous):

|dw:1351736609957:dw|

OpenStudy (anonymous):

Oh two -'s make a positive...

OpenStudy (anonymous):

oops

OpenStudy (anonymous):

you would get this because a negative times a negative = positive

OpenStudy (anonymous):

ok so you understand what we need to do now?

OpenStudy (anonymous):

Plug in the other two number. y = 3 y = -7 ?

OpenStudy (anonymous):

yup you got it :)

OpenStudy (anonymous):

Sweet, thanks. and that's the answer?

OpenStudy (anonymous):

when you put it into the chart ya|dw:1351736876704:dw|

OpenStudy (anonymous):

sorry 0 should =-3

OpenStudy (anonymous):

Oh alright. Thanks again.

OpenStudy (anonymous):

np glad to help

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