Wednesday
October 22, 2014

Posts by herbgeorge


Total # Posts: 6

Algebra :\
Introduce a factor that gives you only one variable letter to work with instead of two. Take -x times 2 to get -2x which adds up to zero when added to 2x. Boom, your x's are gone. Solve for y and use whatever y equals to find x back in the original equations. -3y+3y=0 for ...
March 21, 2010

Algebra :\
If I were you, I would mutiply the bottom left clear through by 2 to get rid of the x's and leave the y's: 2x+5y=3 -2x+6y=-14 2+-2 opposites add up to zero 11y=-11 y=-1 Do the same with the others on the right. -3 as a factor makes the y's go away so you have ...
March 21, 2010

Math
The grapah of a quadratic is a parabola, which is a U shaped curve. It might help to sketch this out on a coordinate plane first.
March 21, 2010

algebra
What is wrong with just plugging in a zero for the y to get the x intercept? In this case it is 4, the sqrt of 16. What is meant by extent? Do you have a graph to which you are supposed to refer? If not, draw your own.
March 20, 2010

algebra
Goci=foci, the plural of focus.
March 20, 2010

algebra
Notice that the denominators are perfect squares. So, either remember sqrts or just substitute in zeroes to get intercepts. Reiny did not give you the foci for some reason.
March 20, 2010

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