You see if the graphs passes the vertical line test.
if any vertical line passes through more than one part of the graph then its not a function - just a relation.
Answer:

Step-by-step explanation:





Answer:
Step-by-step explanation:
d^2=(x2-x1)^2+(y2-y1)^2
d^2=(6-8)^2+(4+5)^2
d^2=4+81
d^2=85
d=(85)^(1/2)
d=9.22 (rounded to nearest hundredth)
Increase=5%of 4
=5÷100×4=0.2
So 4+0.2=4.2litres
Answer:
i dont know sorry
Step-by-step explanation: cant explain it