Answer:
k = 4
Step-by-step explanation:
The graph represents y and x in direct proportion with equation
y = kx ← k is the constant of proportionality
To find k use the point (1, 4), that is x = 1, y = 4
k =
=
= 4
Answer:
C. 0≤x≤7
Step-by-step explanation:
It is not choice D. because it has y instead of x. It is supposed to be x because it is asking for domain.
Hope this helps!
I used similarities in triangles
Answer:
the only thing you need to do is to divide the speed with the distance
Answer:
Option A) 
Step-by-step explanation:
The given expression is:

Taking LCM in upper and lower fractions, we get:

Therefore, the option A gives the correct answer.