Identify two solutions to the system of inequalities. y<-2/3x+4
y5/2x-4

A
(3,2)\left(3,2\right)(3,2)

B
(2,−1)\left(2,-1\right)(2,−1)

C
(6,−2)\left(6,-2\right)(6,−2)

D
(−1,3)\left(-1,3\right)(−1,3)

E
(−2,−1)\left(-2,-1\right)(−2,−1)

a

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.