Subtract using a number line. 1.6 - 1.9
Plot the minuend and the difference on the number line.
-2
-1.5 -1 -0.5
0
0.5
1
1.5
2.
2.5
3

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

do you have a picture of the table