Answer:
-9
Step-by-step explanation:
Assume they are both positive numbers.
12 - 3 = 9
Imagine the numbers both on a lined number plot.
The difference is -9.
lx-1 l ≤ 13
There are 2 solutions:
x-1 ≤ 13
and
x-1 ≥ -13
Solve each one
x-1 ≤ 13
add 1 to both sides of the equation
x-1+1≤ 13+1
x ≤ 14
x-1 ≥ -13
Add 1 to both sides:
x-1+1 ≥-13+1
x ≥ -12
-12 ≤ x ≤ 14
Answer:
sorry that it's sideways.
and sorry if I didn't answer your question, because it dosent really make sense.
all I understand is find X from y=3x-9
and I did find X, but I hope this helps