If ΔABC is similar to ΔDEFand EF = 6y, which represents the length of DF Options
3y + 3
3y + 9
4y + 74
y + 16

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles