Question

Write an equation for the table.
x -1 0 1 2
y 5 3 1 -1
Answer

y = -2x + 3

y = -x + 3

y = 2x + 5

y = x + 5

Answer 1

constant is 3 (refer to x=0)

Answer 2

y=mx+3
substitute (1,1):
1=m+3
m=-2

\(\therefore y=-2x+3\rightarrow A\)