Question

Sandy is observing the velocity of a runner at different times. After one hour, the velocity of the runner is 4 km/h. After two hours, the velocity of the runner is 2 km/h.

Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of the runner at different times. Show your work and define the variables used. (5 points)

Part B: How can you graph the equations obtained in Part A for the first 4 hours? (5 points)

Answer 1

@Vocaloid

Answer 2

2 times t?

Answer 3

then for part B you would plot t on the x-axis, velocity on the y-axis

then you would graph v = 4t between t = 1 and t = 2
and, on the same graph, v = 2t between t = 2 and t = 4

Answer 4

wait for part A would i put v=4t and v=2t?

Answer 5

yes, make sure to specify what v and t represent

Answer 6

alright and for B

Answer 7

oh i got B thank you so much again!

Answer 8

hm just a second, just realized something

Answer 9

v = ___ t would be the distance not the velocity

so for the velocity equations I would actually recommend

v = 2 for 1 < t ≤ 2
v = 4 for 2 < t ≤ 4

as the equations, then graph those

Answer 10

this question isn't worded very well :S

Answer 11

you're right it isn't worded that great lol

Answer 12

so what should i write for part a then?

Answer 13

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Vocaloid
v = ___ t would be the distance not the velocity

so for the velocity equations I would actually recommend

v = 2 for 1 < t ≤ 2
v = 4 for 2 < t ≤ 4

as the equations, then graph those
\(\color{#0cbb34}{\text{End of Quote}}\)
probably this, then for part B just explain how you would graph these two equations on the same plot

Answer 14

alright thank you @Vocaloid