Find the slope of the line passing through the points given below or state that the slope is undefined. then indicate whether the line through the points rises, falls, is horizontal, or is vertical.

(8,3) (9,8)

select the correct choice below and, if necessary, fill in the answer box within your choice.
a.
the slope is ?
b.
the slope is undefined.

indicate whether the line through the points rises, falls, is horizontal, or is vertical. choose the correct answer below.

a.
the line rises from left to right.
b.
the line is horizontal.
c.
the line falls from left to right.
d.
the line is vertical.

QUESTION A

The given points are

and

The slope can be found using the formula;

We substitute the point to obtain;

This simplifies to

Therefore the slope is 5.

QUESTION 2

A positive slope indicates a rising line

A negative slope indicates a rising line

A zero slope means the line is horizontal.

An undefined slope means the line is vertical.

The correct answer is

A. The line rises from left to right.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.