Find "k" and complete the table when y=kx

X...| 2 | 4 | --| 7 |

Y...|-- |28|42|--|

Find "k" and complete the table when y=kx

X...| 2 | 4 | --| 7 |

Y...|-- |28|42|--|

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Olney, MD

y = kx, so y/x = k

You have two values of y and x from the table, (4,28). Hence:

k = y/x = 28/4 = 7

So the equation is y = 7x.

Now we can complete the table. For the entry x=2, we can compute y= 7x = 7*2 = 14, so put a 14 below the 2 in the table. You should be able to complete the rest of the table on your own now.

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