Graph of y = 3 sin 2x in degrees, from 0° to 360°

An example figure from the Coordinate Grid Generator.

The curve y = 3 sin 2x on a grid whose x-axis runs from 0° to 360°, with a gridline every 45° and numbers every 90°, and whose y-axis runs from −4 to 4 — The curve y = 3 sin 2x drawn in blue on a coordinate grid whose x-axis runs from 0° to 360°, with a gridline every 45° and numbers at 0°, 90°, 180°, 270° and 360°, and whose y-axis runs from −4 to 4. It goes through two full cycles, reaching 3 at 45° and 225° and −3 at 135° and 315°, so students can read its amplitude of 3 and period of 180°. The equation isn’t written on the figure.

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Answer key

y = 3sin(2x)

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