Answer:The simplified expression that represents the uncle's age is
4y + 12
Step-by-step explanation:
Let y represent your age.
Your sister is 3 years older than you. This means that your sister's age is y + 3
Your uncle is 4 times older than your sister. It means that the age of your uncle would be
4(y + 3)
The simplified expression that represents your uncle's age would be
4y + 12
Yes it is linear since it's in the standard form Ax+By = C
A = 2
B = -8
C = 16
<span>x-intercept: 1/4
y-intercept:8</span>