+0  
 
0
1
126
7
avatar+1656 

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

 Dec 10, 2019
 #1
avatar+21725 
0

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

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

 

 

 

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

 Dec 10, 2019
 #2
avatar+1656 
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
 #3
avatar+21725 
0

Yes....

and yes...

and yes....

ElectricPavlov  Dec 10, 2019
 #4
avatar+1656 
0

what about this one for the same question as 2, would it be C?

jjennylove  Dec 10, 2019
edited by jjennylove  Dec 10, 2019
edited by jjennylove  Dec 10, 2019
 #5
avatar+1656 
0

i think?

jjennylove  Dec 10, 2019
edited by jjennylove  Dec 10, 2019
 #6
avatar+21725 
0

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

ElectricPavlov  Dec 10, 2019
 #7
avatar+1656 
0

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

jjennylove  Dec 11, 2019

13 Online Users

avatar
avatar
avatar