Question

Write a function rule for the table.

c = 18d + 18

c = 18d

c = 18d + 11

c = 11d + 18

Answer 1

The answer is the Third solution.
example:
C = (18 × 2) + 11
C = 36 + 11
C = 47

Answer 2

From the given table, we have two points : (1,29) and (2,47).

Now let us use slope formula to find the slope :

`slope = (y2-y2)/(x2-x1)`

`slope = (47-29)/(2-1)`

slope =18

Now we use point slope form to get the final equation.

Using point (1,29) and slope 18,

`(y-y1)=m(x-x1)`

`(y-29)=18(x-1)`

`(y-29)=18x-18`

`y=18x+11`

So final equation becomes c=18d +11