Math

posted by Yui

9. which set of output values correctly completes the function table?
y=6-x
input (X) output (y)
-2 ?
-1 ?
3 ?
-----------------------
4,5,3
-8,-7,3
8,7,3

11. What is the function rule shown by the table?

input(x) output(y)
-2 -3
0 1
1 3
2 5
---------------------
y=x-1
y=x+2
y=2x+1

  1. Reiny

    My goodness, it would be so easy to just plug in the 3 given values.

    For the 2nd, just looking at the last 3 cases, for each increase of 1 in the x, we get an increase of 2 in the y, so ...... I only see one equation that says that.

  2. Damon

    9.
    6 - -2 = 8
    6 - -1 = 7
    6 - +3 = 3


    11.
    hint
    2*-2 + 1 = -3
    2*0 + 1 = 1
    2*1 + 1 = 3

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