Tuesday

January 27, 2015

January 27, 2015

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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