Can someone me with this question

Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

If chord ab is congruent to chord cd, then what must be true about ef and eg?