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Y = x^2 + 4x - 5

I need to know if it is maximum or minimum , the axis of symmetry , the vertex , domain , range ​

User Luminita
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2 Answers

5 votes

Answer:

i honestly have no idea

Explanation:

User Schybo
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4 votes

Answer:

The coefficient of x^2 is positive (here it is 1) so we have a minimum.

Rearrange it to the form (x-a)^2 + b:

(x+2)^2 - 4 - 5 = (x+2)^2-9

This means the minimum, or vertex, is at (-2,-9)

Parabolas are symmetrical horizontally, so the axis of symmetry is the vertical line at the minimum, which is x = -2

The domain is all numbers

The range is y >= -9

User Fezfox
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