math help !

3. Which function rule would help you find the values in the table ?

n 2 4 6
m -8 -16 -24

A) m = -2n
B) m = n - 2
C) m = n - 4
D) m = -4n

2. Explain how to write a function rule from the table below. Then write a function rule.

x 2 4 6
y 1 0 –1

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asked by kelsey
  1. Looks like D to me

    For #2, always check to see how much y changes when x changes by a fixed amount. That will give the slope of the line (the coefficient of the x term). Here, when x changes by +2, y changes by -1. So, the slope will be -1/2 and the function rule will look like

    y = -1/2 x

    But, when x=2, y=1, and -1/2 * 2 = -1

    So, we need to add 2 to get to the real values, and

    y = -1/2 x + 2

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    posted by Steve
  2. can someone tell me all the answers so i can check

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  3. anoymos u just want the answers XD!

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    posted by O0f
  4. i need answers to the whole functions unit test.

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