The formulas:

Expand the expression:

Plug the values into the expression:
Answer:
-12yx
Step-by-step explanation:
y=x/2+3
y-3= -6
-6y= x/2
-6 x 2= -12yx
½ × 2 = 1
½ × 3 = 3/2
½ × 4 = 2
½ × 5 = 5/2
❄ Hi there,
, rounded to 3 DP (decimal places)

Why round? Because the entire number goes on for ever and ever.
So, we need to round. 1/6 rounded to 3 decimal places is 0.167. We have 3 numbers after the decimal point.
❄
No, this is not a function because it does not have any equal values.