If A(x1, y1), B(x2, y2), C(x3, Y3), and D(x4, y4) form two line segments, AB and CD, which condition needs to be met to prove AB _|CD? ОА. У4 - Уа, Уз – У1
Х. – Х. Х. – Х.
ОВ.
У4 - У. Х4х
= 0
y, -х, х, -х,
о с. 4 -У, У. НУ,
= -1
х4-х, х, -х,
OD.
"У, -у, ха-х,
х. — Х. У НУ,
СЕ. У4 - УХАНХ. До
y, -х, х, — X,

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books