Find the slope of the line below.

-2/5

Step-by-step explanation:

You can find this by examining how to get from one point to the other. If you're going from a orange point on the left to one on the right you have to go down 2 units and over 5. That means you do -2 on the y axis and +5 on the x axis. So, with rise over run that equals -2/5.

the first option is the answer.

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.