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1.

Y = x² +4x-1find the values of x and y​

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Answer:

a=1,b=−4. As a is POSITIVE, the PARABOLA should open up.

As c=0, the parabola passes through the origin.

Vertex: x=−b/2a=2, so y=−4

⇒Vertex=(2,−4). ASSUMING two values of x,

x 1 0

y −3 0

Points obtained: (2,−4),(1,−3),(0,0).

SYMMETRY of parabola: Mirror image.

Points of (1,−3) and (0,0) are (3,−3) and (4,0), respectively.


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