Square Viewing Rectangle Graph the lines y = 2x and in the standard viewing rectangle.
(a) Do the lines appear to be perpendicular?
(b) Graph the lines in the following viewing rectangles.
i. [−15, 15, 1] by [−10, 10, 1]
ii. [−10, 10, 1] by [− 3, 3, 1]
iii. [−3, 3, 1] by [− 2, 2, 1]
Do the lines appear to be perpendicular in any of these viewing rectangles?
(c) Determine the viewing rectangles where perpendicular lines will appear perpendicular. (Answers may vary.)
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