1. y = 2x - 1
( y=-4x7
2
2 0
Graphing

d

step-by-step explanation:

d

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?

answer: you need to organize this better it does not make sense.

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.