SOLUTION: How to i write an equation for each relation. I need help on HOW to find the solution. x 1 2 3 4 5 f(x) 5 7 9 11 13 can you help me learn the steps.

Question 26450: How to i write an equation for each relation. I need help on HOW to find the solution.
x 1 2 3 4 5
f(x) 5 7 9 11 13
can you help me learn the steps.
Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!
sequences like this are easy to do, once you have the step in your head that i am going to show you... the Jon sure-fire method :-)

Look at the F(x) values...notice their increment is by 2 each time. This is the 2times table... 2, 4, 6, 8, 10, just moved a bit.
So, the x2 table is 2n where n is 1,2,3,4,5, etc

First term... is 5. First term of the x2 table is 2. How do we get from 2 to 5? by adding 3.

So formula is 2n+3.. check with say 5th term: 2(5)+3 is 10+3 --> 13. This is the correct value!

Another
2 5 8 11 14.

Difference is 3..so x3 table ie 3n

First term is 2... x3 table has 3. How do we get from 3 to 2? subtracting 1. So formula is 3n-1. Check say 5th term... Done!

Does that help?

jon.

RELATED QUESTIONS
How do you write an equation with the relation x 1 2 3 4 5 y 5 7 9 11 13 (answered by ankor@dixie-net.com)

x. -2 -1 1 2 4 f(x) 13 12 10 9 7 Write an equation from each relation. How (answered by edjones)

Please help! I have tried to figure out the following problems for the past few days,... (answered by stanbon)

Can you please tell me if i got these correct? Im doing a practice test to study for my... (answered by Edwin McCravy,solver91311)

State the inverse of each relation. Is the inverse a function? 1. {(18, -3), (-13,... (answered by MathLover1)

How do you write an equation for the relation in the chart ?? x -2 0 2 4 y 9 5 1... (answered by scott8148)

I am attempting to go over my 13 yo grandson's math homework and my age has humbled me to (answered by ikleyn)

For my finals I only have about 6 questions that I am stuck on. Any help is appreciated. (answered by stanbon)