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Mathematics 7 Online
OpenStudy (openstudyrocks5*):

Complete the function table. Then write a rule for the function.

OpenStudy (openstudyrocks5*):

OpenStudy (openstudyrocks5*):

@iGreen.

OpenStudy (anonymous):

We can find the slope. \(m = \dfrac{y_2-y_1}{x_2-x_1}\) \(m = \dfrac{-1+4}{1+2}\) Simplify that

OpenStudy (openstudyrocks5*):

What do you mean simplify it? how do you simplify that?

OpenStudy (anonymous):

Add -1 + 4 and 1 + 2, then divide

OpenStudy (openstudyrocks5*):

Divide by what?

OpenStudy (anonymous):

First add -1 + 4

OpenStudy (openstudyrocks5*):

3

OpenStudy (anonymous):

Yes, now add 1 + 2

OpenStudy (openstudyrocks5*):

3

OpenStudy (anonymous):

Yes, now divide 3 / 3

OpenStudy (openstudyrocks5*):

1

OpenStudy (anonymous):

Yes, so now we can plug that into point-slope form with one of our points. \(y - y_1 = m(x - x_1)\) Where \(y_1\) is the y-value of the point, \(x_1\) is the x-value of the point, and \(m\) is the slope. So we have: \(y + 4 = 1(x + 2)\) Distribute 1 into the parenthesis: \(y + 4 = x + 2\) Subtract 4 to both sides what's 2 - 4?

OpenStudy (openstudyrocks5*):

-2

OpenStudy (anonymous):

Yes, now we have: \(y = x - 2\) Now we can plug in '-3' for 'x'. \(y = -3 - 2\) What's -3 - 2?

OpenStudy (openstudyrocks5*):

-5

OpenStudy (anonymous):

Yes, so we have (-3, -5) -5 goes in the first blank What's -1 - 2?

OpenStudy (openstudyrocks5*):

-3

OpenStudy (anonymous):

Yes, so -3 goes in the next blank. What's 0 - 2?

OpenStudy (openstudyrocks5*):

-2

OpenStudy (anonymous):

Yes, so that goes in the last blank.

OpenStudy (openstudyrocks5*):

Thanks I have 4 questions left :). Your a lifesaver

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