How do you factor out the coefficient of a variable?

You divide by the coefficient. 

Let's say I have 2x.  To get rid of the coefficient, I have to get rid of that 2, which basically means turn the coefficient of the variable into a 1. How do I do that? We divide by 2 but keep it equivalent. That probably makes no sense, so let me show you:

2x is the same thing as 2(x). See? Now the 2 and the x are separated, but the expression is still the same! More examples:

5x   >   5(x)

10x  >  10(x)

Here's a tricky one:

 >  10x(x)

I hope this helped!

The answer for this question is 80

and y≤ -x +4 .

step-by-step explanation:

we are given a graph for system of inequalities.

in order to write the system of inequalities for the given graph, we need to find the inequality for each of the line separately.

let us find the slope of dotted line first.

taking two coordinates on the graph.

let us say (0,0) and (3,1).

let us find the slope of the line now.

slope of the dotted line would be =.

y-intercept of dotted line is y=0 only.

plugging slope m= and b=0 in slope-intercept form y=mx+b, we get

.

the line is shaded up of that dotted line.

therefore, for shading up we would take greater than inequality symbol > .

and because it's a dotted line we would take only > symbol in place of = sign in above equation of line.

therefore, inequality for dotted line would be

.

let us take two points (3,1) and (0,4) on the solid line.

slope of the solid line would be =.

for the solid line we have y-intercept b= 4.

plugging slope m= -1 and b=4 in slope-intercept form y=mx+b, we get

y = -1x + 4.

the line is shaded down of that solid line.

therefore, for shading down we would take less than inequality symbol < .

and because it's a solid line we would take ≤ symbol in place of = sign in above equation of line.

therefore, inequality for solid line would be

y≤ -x +4 .