Solve the system of liner equation by substitiotom 6x-9=y and y=-3x

(1,-3)

x=1 y=-3

Step-by-step explanation:

6x-9 = y

substitute y = - 3x into the above equation

6x-9 = - 3x

subtract 6x from each side

6x-9-6x = - 3x-6x

-9 = - 9x

divide by - 9

-9/-9 = - 9x/-9

1 = x

now we need to solve for y

y = - 3 (1)

y = - 3