Which of the sets of ordered pairs represents a function? a = {(3, −5), (4, 6), (−3, 9), (2, 7)} b = {(2, 4), (−1, −7), (5, 6), (4, 3)} only a only b both a and b neither a nor b

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.