Identify the directrix, focus, and vertex of the parabola in the figure. A parabola goes through (negative 3, 3) & (1, negative 1). A point is below the parabola at (negative 3, 2). A line above the parabola goes through (negative 3, 4) & (0, 4).

Match the correct coordinates or equation with the correct part of the parabola.

directrix
focus
vertex
directrix
(0,4)
(−3,2)
y=4
(−3,3)
(1,−1)
x=4

answer: answer is b.

[m < b = 120º]

step-by-step explanation:

keene f. ffnfnfnfnfnfnfn f bfnfnfnfnfj

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.