Choose all of the following equations that have a vertex that is the maximum point of the parabola. more than one answer may be chosen.

y = −4x2 + 8x − 19
y = 3x2 + 9x − 4
y = 8x2 − 6x + 128
y = −x2 − 7x + 1

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

Find the perimeter of the figure shown above. a. 18 yds c. 20 yds b. 10 yds d. 24 yds select the best answer from the choices provided

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32