Use the points shown on the graph to the right to determine the slope of the
line.
AY
10
8-
Select the correct choice below and, if
necessary, fill in the answer box to complete
your choice.
X
O A. The slope of the graph is
(Type an integer or a fraction.)
OB. The slope is undefined
101-8
6 1-4
2
0
B
16

step-by-step explanation:

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.

b is the right answer