Question

I have try to do this but i kinda got a diff answer for 2th diff!!

Answer 1

Problem a

Find out the first difference and second difference

x=6 y=7

x=7 y=4 4-7=-3

x=8 y=3 3-4=-1 -1-(-3)=2

x=9 y=4 4-3=1 1-(-1)=2

x=10 y=7 7-4=3 3-1=2

x=11 y=12 12-7=5 5-3=2

Remember that

If the second difference is the same value, the model will be quadratic

In this problem, the second difference is the same value

therefore

The function is a quadratic function