Answer:
option D.
Step-by-step explanation:

let's take any point on the graph. let's say (2, 16)
and one point we know is (0, 0)

= 16($) / 2 (hrs)
= 8 $/ hrs
that is option D.
Answer: D
Step-by-step explanation:
Given the speed is 200 km /hr
use 1 km = 1000 meter
1 hr = 3600 seconds
so

simplifies to


so option C
Answer:
X=-4, y=-8
Step-by-step explanation:
x − 4 = 3x + 4
x - 4 - 3x = 3x - 3x + 4
-2x - 4 = 4
-2x - 4 + 4 = 4 + 4
-2x = 8
-2x/-2 = 8/-2
x = -4
then insert -4 for x then solve the equations.