Draw an angle and label it ∠XYZ. Draw YA−→− so that ∠AYX and ∠AYZ are congruent* and adjacent, but YA−→− is NOT an angle bisector.
Explain why YA−→− is not an angle bisector.
*It is required that ∠AYX and ∠AYZ are approximately congruent within one degree or less.

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above