Answer:
Add 1 multiply by two
Explanation:
As you see when 0 goes to 1, 9 goes to 18 so it is add 1 multiply by two.
y=9x+9
y=mx+c
You can use any of the 2 points
pnt1. (1;18)
pnt2. (3;36)
find the gradient
substitute one point and gradient to find c
18=9(1)+c
18=9+c
c=18-9
c=9
therefore the equation is y=9x+9
4.5m questions
5.9m answers