Which figure is the image produced by applying the composition r0,-90 ry to figure v? a. figure a b. figure b c. figure c d. figure v

The figure is going to be rotated by 90 degrees. The direction of the angles in the cartesian plane is always counter-clockwise, so the minus sign means that the figure will be rotated clockwise. Hence, it gets into the first quadrant. Then, it is reflected across the y-axis and thus we get a shape in the 2nd quadrant. It is clear that the new shape has a different orientation from V and thus we get that the answer is shape B.

(The vertical side of the quadrilateral V has to be horizontal in our new figure since the rotation is by 90 degrees and reflections along the axis do not affect whether a line is horizontal or vertical. B Satisfies this, while V does not).

M< 5 = 80 , < 2 = 80, < 6= 100, < 3= 100, < 7= 80, < 4= 80, < 8= 100