x | 1 | 2 | 4 | 5 | 7 |

y | 7 | 11 | 19 | 23 | 31 |

How can I make a variation formula out of this table??

Please help me

ManuelBautista2019 Sep 14, 2017

#1**+2 **

I'm going to add a few missing terms (that fit the pattern that you gave):

x = 1 2 **3** 4 5 **6** 7

y = 7 11 **15 ** 19 23 **27** 31

Notice that as each x-term increases by 1, the corresponding y-term increases by 4.

This means that this is a linear equation with slope = 4.

y = mx + b (with m = 4)

y = 4x + b

Now, substitute any (x,y) pair into this equation. I'm going to use (5,23), but I could have used any pair.

23 = 4(5) + b

23 = 20 + b

3 = b

This means that a possible equation is: y = 4x + 3.

geno3141 Sep 14, 2017