Using the given points and line, determine the slope of the line.
(1, 2) and (2, 1)

-1

Step-by-step explanation:

To find the slope of a line given two points, you can use where and are points on the line.

Or you could just line up the points vertically and subtract them vertically, then put 2nd difference over first.

Like so:

 (  2   ,     1   )

-(    1  ,     2   )

--------------------

    1          -1

So the slope is -1/1 or just -1.

correct answer is option b.

step-by-step explanation:

the true statement about geometric figure is option b that is one line can be drawn through all three points.

if three points are on the same plane, they can be connected by a line.

the answer is 13 cm