The figure below has a point marked with a large dot. First, rotate the figure 90 degrees
counterclockwise about the origin.
Then, give the coordinates of the marked point in the original figure and the final figure.

3. solve by graphing: y = 2x + 6 x + y = -3

What properties allow transformation to be used as a problem solving tool

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.