PLEASE HELP ASAP In this diagram, which equation could you prove to be true in order to conclude that the lines are parallel?

c−a/b = −d/e

c−a/b = d/e

c−a/b ⋅ −d/e=−1

c−a/b ⋅ d/e=−1
Two parallel lines on a coordinate plane. The first line passes through a point on the y-axis labeled 0 comma a and a point in the first quadrant labeled b comma c. The second line passes through a point on the y-axis labeled 0 comma negative d and a point on the x-axis labeled e comma 0.

Extra points! find the missing dimension! need asap

What is the graph of the absolute value equation ? y=|x|-5

Mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.