Write an inequality using absolute value if the answer is given double inequality

-2 is less than x and less than 4

Step-by-step explanation:

You are given

Note that

so, first, subtract 1 from this double inequality:

Now, rewrite it using absolute value:

Meaning: point x is less than 3 units away from point 1.

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