ALGEBRA If y varies directly with x, write an equation for the direct variation. Then find each value. 9. If y = –5 when x = 2, find y when x = 8.

10. Find y when x = 1, if y = 3 when x = 2.

11. If y = –7 when x = –21, what is the value of x when y = 9?

12. Find x when y = 18, if y = 5 when x = 4.

idk

step-by-step explanation:

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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. : )