Hello there! :)
First, we. must make sure that variables are on the left side of the equation and numbers are on the other side.
-x=-12-11
-x=-23
x=23
Hope it helps!

Brainliest?
Answer:
The slope is 4
The y-intercept is 3 OR (0, 3)
Step-by-step explanation:
Points on the graph: ( -1, -1) and (0,3)
Slope:
m=(y2-y1)/(x2-x1)
m=(3+1)/(0+1)
m=4/1
m = 4
Point slope-intercept:
y - y1 = m(x - x1)
y + 1 = 4(x + 1)
y + 1 = 4x + 4
y = 4x + 3
What does that mean then what do we need to do
sorry for asking
A) 3.9a+b hope this helps