Posted by **Abby** on Saturday, April 6, 2013 at 5:05pm.

Please help me find the rule input 0 output 2 then input 1 output 4 next input 2 output 6 then input 3 output 8 last input 4 output 10

Thanks

- math -
**MathMate**, Saturday, April 6, 2013 at 5:19pm
If you suspect that the rule is a straight line,

y=mx+b

then find the slope using

m=(y2-y1)/(x2-x1)

Substitute m and (x1,y1) into the equation to find b.

Verify that the rule applies to all the points.

- math -
**Ollie**, Saturday, April 6, 2013 at 5:23pm
First make a table to show input and output.

IN. OUT

0. 2

1. 4

2. 6

.. ..

Notice that the difference between outputs is 2.

But 2 times each input does NOT give the correct output. However, if you add 2 to the product of 2 and input, you get the correct output.

Therefore, the rule is 2x +2 where x is the input.

## Answer This Question

## Related Questions

- math - i need help with patterns and equations i cant find the rule it goes like...
- 7 th grade math - What is the rule for this function? input 1 output 3 input 2 ...
- Algebra - I have an input / output machine I need a rule I can use for any value...
- Math - Hey, I need your help! I have an input output table that I need the ...
- math - i need help! my last math question cant figure out! whats the rule for ...
- Math - What is the rule for this function? input 2 output 5 ,input 4 output 13, ...
- math - What is the rule for this function? Input 1 output 3 Input 2 output 5 ...
- math - What is the rule for this function? Input 1 output 3 Input 2 output 5 ...
- calculus - i have a problem figureing out this question do you have any help? ...
- Math - Whats my rule Input 140. Output. 22 Input 100. Output. 62 Input. 91. ...

More Related Questions