I need help this is so confusing

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

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Which of the following could be the ratio of the length of the longer leg 30-60-90 triangle to the length of its hypotenuse? check all that apply. a. 313 6 b. 3: 215 c. 18: 13 d. 1: 13 e. 13: 2 of. 3: 15