Answer:
M = (Y2 - Y1) / (X2 - X1)
Step-by-step explanation:
First, look at a graph of a line and find two points, 1 and 2. You can use any two points on a line. The slope will be the same between any two points on a straight line.
Note the X and Y value for each of the points.
Now we'll designate the X and Y value for points 1 and 2. We'll use subscripts to identify them in the slope formula.
Hope this helps!
X=-2
You can also check by plugging -2 in for x. Here is a picture. Please notify me if I made an error!
Answer:

Can only be simplified through calculator using decimal equivalents.
Step-by-step explanation:
The perimeter of a rectangle is the formula P=2l+2w. Here
and
. So the perimeter is:

Answer:
if
is divided by
, the remainder is -9
Step-by-step explanation:
We need to find the remainder if
is divided by 
Dividing
by 
The division is shown in figure attached.
The remainder = -9
The quotient = x+3
So, if
is divided by
, the remainder is -9