Which of the relations given by the following sets of ordered pairs is not a function? {( – 4, – 2), ( – 1. – 1), ( – 1, 1), (3,5), (7, 10)} 0

{(5,0),(4,0), (3,0), (2,0), (1, 0)}

{( - 6,4), ( – 3, - 2), (0,5), (1, - 2), (2, 3)} o

{(-8,3), ( – 6,5), ( – 4,2), ( – 2,7), ( - 1,4)}​

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

b.my answer is b.

brainliest

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step-by-step explanation:

sorry i just need to anwers this to get points

step-by-step explanation: