Answer
(a) Positively related
(b) Slope Upward
(c)Directly related
(d)C=110
(e) Y=360
Work Step by Step
(a) C and Y are positively related to each other
(b) Slope upward
(c) Directly Related
(d)$ C= 10 + 0.5 \times 200$
C= 110
(e) We find:
$100= 10 + 0.25 \times Y$
0.25Y=90
Y=360