E General section 1. Solve each pair of the following a) y = x-2 b x + y = 4

y=×-21), ×+y=411)

subtitute y into equation 11)

x+(×-2)=4

×+×-2=4

2×=4+2

2×=6

divide both sides by 2

x=3

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

the answer will be