1. What is the vertex of each of these parabolas?

a. y = (x –7)2 +4 b. y = 3(x + 7)2 – 4

2 answers

x greater than 1
to type an exponent, we use the ^

a) y = (x-7)^2 + 4
vertex is (7,4)

you must learn the pattern to pick out the vertex from that standard form

if y = a(x-p)^2 + q, the vertex is (p,q)

(notice the x value is opposite of p, the y value is the same as q )
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