Question

Write an equation for the table.

x


-1


0


1


2

y


5


3


1


-1
A. y = -2x + 3
B. y = -x + 3
C. y = 2x + 5
D. y = x + 5

Answer 1

Let the equation be y=mx+c
Substituting y=5 and x=-1
you get
5=-m+c-(1)
substituting y=3 and x=0
you get
3=c
(1)=>5=-m+3
5-3=-m
-m=2
m=-2
so the eqn is y=-2x+3
Is that clear?

Answer 2

thanks

Answer 3

yw