Answer:
<u><em>6</em></u>
Step-by-step explanation:
Hey there) The formula of your line is:

If point has y=-4, then:

Hope this helps) Have a nice day/night :)
Well first do 36 divided by 4, which is 9, then square root 9 to make it 3, so your answer should be 3
Half of 126 is 63 because 63+63=126 and 126/2=63
It will take 8 minutes.
You use a proportion
5/1=2400/x you use 2400 because 2.4km=2400 meters and u need to use the same unit of measurement.
so cross multiplying gives you 5x=2400 which is equal to 480. BUT this is 48 seconds, and it asks you how many minutes, not seconds. So, you divide by 60 because there are 6 seconds in a minute, and you get 8.