Who introduced the idea of walled city to the filipino craftsman.

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jasminecoronetti44

07.05.2020

SAT

We know the parabolic function:

y=ax^2+bx+c

We will use the points to form the equation (-2,9) we will get:

9=a(-2)^2+b(-2)+c

9=4a-2b+c

Now, using (-4,5) we will get:

5=16a-4b+c

Now, using (1,0) we will get:

0=a+b+c

Now, using these three equations we will find a,b and c

On solving equations: a=-1,b=-4 and c=5

Now, using a,b and c in the general equation we get:

y=(-1)x^2+(-4)x+5

$\Rightarrow y=-x^2-4x+5$

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