Pre-Algebra

Question

Pre-Algebra

anonymous · Answer

attachment

e.mccormick · Answer

OK.  You have two sets of numbers, (-10,7) and (-13,0).  So take it in parts.  What happens to the -10 to make it -13?  And what happens to 7 to make it into 0?

anonymous · Answer

Don't know really how to do this

e.mccormick · Answer

OK.  What they are talking about is coordinates.  Those are used for graphing and things like that.  The x is the side to side and the y is the up down.  They make an ordered pair, (x,y).  That is the little part at the start before the arrows.  Then they ask you about how (-10,7) becomes (-13,0).  Does any of that make sense?

anonymous · Answer

The coordinates make sense. Kinda refreshing my memory a little bit however not confident this is what I use to do.

e.mccormick · Answer

Thats fine.  There are lots of ways to talk about coordinates.  I am going to do a small picture to help with this one.

e.mccormick · Answer

|dw:1365139128175:dw|
OK.  Here is basically what is happening in coordinates.

e.mccormick · Answer

What they are asking is, what would be the numbers that make the arrow.

e.mccormick · Answer

Have a guess at this point?

anonymous · Answer

the second answer ?

e.mccormick · Answer

Close.  10-3=-13 and 7-7=0.  The important parts being the -3 and -7.

e.mccormick · Answer

If I write it out another way, you might see how this came about:
(-10+x=-13 , 7+y=0)