Needexplain i will mrk brainliest 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=

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!

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.