Here is the matching of the lettered items with the numbered items:
-
y = 45 - 2x
Match: b. Linear -
y = 45 - x²
Match: c. Non-Linear -
y² = -x + 2
Match: a. Not a function (since y² implies that y can take on both positive and negative values, it does not represent a function in the typical sense).
So the final matches are:
1 - b
2 - c
3 - a