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http://prntscr.com/ls7s3l

 Dec 8, 2018
 #1
avatar+99282 
0

These are all concave up parabolas.

they are parabolas becasue the highest power of x (the degree) for each one is 2

They are all concave up becasue the number in front of x^2 (the leading coefficient) is positve.

 

The higher the leading coefficient the steeper, or narrower, the parabola.

Now you can work if out for yourself.

 Dec 8, 2018

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