Solve the problem as directed.
If x and yvary directly, and x = 10 when y= 3, what will be the value of x when y=9?

x=30

Step-by-step explanation:

the ratio is 10:3

9/3=3

10*3=30

x

step-by-step explanation:

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )