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Math question help pls with the ones I got wrong

Math question help pls with the ones I got wrong-example-1

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3rd equation:

f(x)= -x^2 + 4

y = -x^2 + 4

Solve for x

x^2 = -y + 4

x = √(4-y)

4-y= 0

4= y

graph:

Range:

( -∞, 4]

Math question help pls with the ones I got wrong-example-1
User Pumpkinzzz
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