Answers by visitors named: Mr. Roboto

PARALLEL (slope is same & intercept is different) LINE 1: x-1 LINE 2: x+1 PERPINDICULAR (slope has flipped fraction & opposite sign) LINE 3: -x-1 LINE 4: -x+1

They group stuff together so you know to perform an operation on more than just 1 thing. EXAMPLES: -x^2 means you just square the x and the answer will have a negative sign in front (-x)^2 means you square not just x, but (-x), which will give you a posit...