The equation for line u can be written as y = 1/9x + 9. Line v, which is parallel to line u,
includes the point (1, -1). What is the equation of line v?

The equation of line v is y = 1/9x - 10/9

Step-by-step explanation:

Given that line v is parallel to line u so it that's mean they have the same gradient/slope which is 1/9. You can use this to find equation:

y = 1/9x + c

Then, you can substitute the x value and y value from the coordinates:

At (1,-1),

-1 = 1/9(1) + c

c = -10/9

y = 1/9x - 10/9

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you