Which is the slope of the line with equation 7x−3y=21? A) 3/7

B) -3/7

C) 7/3

D) -7/3

That’s the answer I hope this helps

1. statement- ca is parallel to db and e is the midpoint of ad reason- given2. statement- reason- alternate interior angles3. statement- de is congruent to ae reason- definition of midpoint4. statement- triangle aec is congruent to triangle deb reason- asa (angle side angle)