Find the value 3 + 5 x ( 2 - 1)

Statement: if two distinct planes intersect, then their intersection is a line. which geometry term does the statement represent? defined term postulate theorem undefined term

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Solve 3x-18=2y and 5x-6y=6 by elimination show work