Find the function rule

X= -2,-1,0,1,2
Y= 9,4,-1,-6,-11
I don't want the answer I just want to know how to do it

3 answers

Does anyone know
Is there anyone who can help me?
the term- to-term difference in the x values is 1

the term- to-term difference in the y values is -5

y = -5 x + b

plug in a pair of values to find b