1. An airplane travels southwest a distance of 800 km at a velocity of 390 km/h. How long does the trip take in hours?

im not sure the answer

2. Which of the graph lines corresponds to the relation y=k/x where k is a constant?

i think its A

3. Which equation represents direct proportionality?

y=mx

y=mx2+b for nonzero b

y=m/x

y=mx2

**i think its y=mx**

jjennylove Dec 10, 2019

#1**0 **

Remember : Rate x time = distance re -arrange as Time = distance/ Rate

Time = 800 km / 390 km/hr = you can do this part !

2. If k is constant .....then as 'x' gets larger the value gets smaller (because 'x' is in the denominator)

SO....which do YOU think it is ?

3. y = mx is a direct proportion y is directly proportional to x by factor m

ElectricPavlov Dec 10, 2019

#2**0 **

i got 2.05 hours is that correct?

and then oh okay so then it would be A line as I had circled?

and oh okay awesome i got 3 right!(:

jjennylove
Dec 10, 2019

#6**0 **

You *THINK*?? Be a little more confident in your abilities ! Yes, it is "C"

ElectricPavlov
Dec 10, 2019

#7**0 **

your right! I need to be more confident, im alway second guessing and overthink it! thanks!

jjennylove
Dec 11, 2019