two ordered pair to write a prediction equation (help)?

Question

i need help solving this problem
A) Draw a catter plot (already got that one)
B) Use two pairs to write a prediction equation
C) Use your prediction equation to predict the missing side

This is the table
x ,y
1 ,1
3 ,5
4, 7
6,11
7,12
8,15
10,?

Answer 1

using (1,1) and (6,11), slope is 10/5 = 2
2(6) = 12, and 11 is 12-1, so y = 2x-1.
that makes missing number 2(10)-1 = 19.

Answer 2

Use the values to get an approximate slope,

m= (y-y)/(x-x)

then use the general form of an equation
y= mx + b
to write your prediction equation.

Use the equation and plug in the x-value to find the missing value.

Answer 3

Need more data.