Graph the image of the polygon after a reflection in the line y=x.

1,589.63 in.^3

step-by-step explanation:

i hope this you : d

the first one

step-by-step explanation:

just id the test.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

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.