kalynhicks06
contestada

NEED HELP THANKS PLEASE EXPLAIN I WILL MRK BRAINLIEST THANK YOU!
The variables y and x have a proportional relationship, and y = 7 when x = 2.

What is the value of x when y = 21?

Enter your answer in the box.

x=_________

Respuesta :

Hi!

x = 6

Explanation:

21 / 7 = 3

So, now multiply 2 by 3 to find the value of x.

2 * 3 = 6

Hope this has helped you!

wegnerkolmp2741o

proportional relational ship  

y= kx

7 = k2

solve for k

7/2 =k


y = 7/2 x

if y = 21

21 =7/2 x

solve for x

multiply by 2/7 on each side

21* 2/7 = 2/7*7/2 x

6 =x