Given:

My answer:

1.

2.

As for my solution for 3-5... I do not know how to get them... I tried using the quadratic formula but failed... They say you can solve them by using the vertex formula and you need to graph a parabola in a cartesian plane..

Phanolo Sep 15, 2014

#6**+5 **

OK...here's No. 3

y ≥ -2x^{2} -2x + 1

There's not much to "solve" by hand, here.....a graph of the solution area is more appropriate

Note that the solution area (in blue) lies "above" and just "touching" the parabola (this is indicated by the "≥" symbol)

I don't know if this is what you're looking for, or not.......

CPhill Sep 15, 2014

#3**0 **

I don't see any problems on here, Phanolo......!!!!

Can you message me with your problem(s) ???

CPhill Sep 15, 2014

#6**+5 **

Best Answer

OK...here's No. 3

y ≥ -2x^{2} -2x + 1

There's not much to "solve" by hand, here.....a graph of the solution area is more appropriate

Note that the solution area (in blue) lies "above" and just "touching" the parabola (this is indicated by the "≥" symbol)

I don't know if this is what you're looking for, or not.......

CPhill Sep 15, 2014