Please help! The equation of line AG is y=(b/a+c)x. The midpoint of BC is (a+c, b). Does the midpoint of BC lie on AG? Why or why not?

•no because (b/a+c)b does not equal a+c
•no because (b/a+c)(a+c) does not equal b
•yes because (b/a+c)b=a+c
•yes because (b/a+c)(a+c)=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.