6. Which of the following sets of ordered pairs is not a function?
a.{(1,4),(1,5), (2,4), (3, 4), (3,5)}
b.{(6, 1), (5,2), (4,1), (3,3), (2,4)}
c.{(1,6), (2,4), (3,5), (4,3), (5, 2)}
d.{(1,4),(2,5), (3,6), (4,6),(5,2)}
_7. Identify the range of the following function when given the domain (2,3,10): y=4x-12
a. -20,0,28
c. 8,12,40 d. -4,0,28
8. For the function illustrated below, what is the domain and what is the range?
m
A n
B r
b.4,12,20
O
s
a. D={m,n,o}
c. D={q,r,s} b. D={m,n}
d. D={m,q}
R={9,r,s}
R={m,n,o}
R={q,r}
R={n,r}
9. The domain of the function 8/x is
a. D={x/x e R, XO} b. D={X/X e R,x+1} c. D={x/x € R,x+8} d.D={x/x € R, X* -8}
10. What is the range of the function f(x) = VY+4?
b. R={y/y 20} b. R={y/y S1} c. R={y/y so } d. R={y/y21}