What transformation is represented by the rule (x, y)→(−x, −y) ? rotation of 180° about the origin reflection across the x-axis rotation of 90° counterclockwise about the origin reflection across the y-axis

From the figure and statement provided, select the proper to prove statement. through a point outside a line one line can be drawn parallel to the line. mn= ab ab + bc= ac mis parallel to ! ab=bc als parallel to b

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Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°