Guided Practice Write the equation of the parabola in vertex form if the vertex is (−1, 0) and the parabola passes through the point (−2, 2).

Start with the vertex form.
y = a(x − h)^2 + k

Using the vertex (−1, 0), substitute h = −1 and k = 0.
y = a(x − (−1))^2 + 0
y = a(x + 1)^2

Substitute the included point into the equation for x and y.
2 = a(−2 + 1)^2

Simplify the equation to solve for a.
2 = a(−1)^2

Type your answer and then click or tap Done.

Complete the equation for the parabola in the graph.

y = Fill in the blank text field 1
(x + 1)^2

2.12 school absences. data collected at elementary schools in dekalb county, ga suggest that each year roughly 25% of students miss exactly one day of school, 15% miss 2 days, and 28% miss 3 or more days due to sickness.61 (a) what is the probability that a student chosen at random doesn’t miss any days of school due to sickness this year? (b) what is the probability that a student chosen at random misses no more than one day? (c) what is the probability that a student chosen at random misses at least one day? (d) if a parent has two kids at a dekalb county elementary school, what is the probability that neither kid will miss any school? note any assumption you must make to answer this question. (e) if a parent has two kids at a dekalb county elementary school, what is the probability that both kids will miss some school, i.e. at least one day? note any assumption you make.