document.write( "Question 146952: This was a two part question. I figured out the answer for A but not B.\r
\n" ); document.write( "\n" ); document.write( "Find components for the following vectors AB :
\n" ); document.write( "(a) A = (1,2) and B = (3,-7)
\n" ); document.write( "My answer is: from A to B [-1,4]\r
\n" ); document.write( "\n" ); document.write( "(b) A = (2,3) and B = (2 + 3t, 3-4t)
\n" ); document.write( "

Algebra.Com's Answer #107322 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Your answer for A is not correct.
\n" ); document.write( "The vector AB should be able to lead you from A to B.
\n" ); document.write( "Look at it this way.
\n" ); document.write( "\"x%5BA%5D%2Bx%5BAB%5D=x%5BB%5D\"
\n" ); document.write( "for the x component and
\n" ); document.write( "\"y%5BA%5D%2By%5BAB%5D=y%5BB%5D\"
\n" ); document.write( "for the y component of the vector.
\n" ); document.write( "You can then re-arrange those equations and determine the x and y components of the vector AB.
\n" ); document.write( "\"x%5BAB%5D=x%5BB%5D-x%5BA%5D\"
\n" ); document.write( "and
\n" ); document.write( "\"y%5BAB%5D=y%5BB%5D-y%5BA%5D\"
\n" ); document.write( "Using the values from A.
\n" ); document.write( "\"x%5BAB%5D=x%5BB%5D-x%5BA%5D\"
\n" ); document.write( "\"x%5BAB%5D=3-1\"
\n" ); document.write( "\"x%5BAB%5D=2\"
\n" ); document.write( "\"y%5BAB%5D=y%5BB%5D-y%5BA%5D\"
\n" ); document.write( "\"y%5BAB%5D=-7-2\"
\n" ); document.write( "\"y%5BAB%5D=-9\"
\n" ); document.write( "[AB]=[2,-9]
\n" ); document.write( "If I start at (1,2) on the grid, I need to move 2 units to the right
\n" ); document.write( "(positive x) and move 9 units down (negative y) to reach point (3,-7).
\n" ); document.write( "b) The method is the same,
\n" ); document.write( "For the x component,
\n" ); document.write( "\"x%5BAB%5D=x%5BB%5D-x%5BA%5D\"
\n" ); document.write( "\"x%5BAB%5D=2%2B3t-2\"
\n" ); document.write( "\"x%5BAB%5D=3t\"
\n" ); document.write( "For the y component,
\n" ); document.write( "\"y%5BAB%5D=y%5BB%5D-y%5BA%5D\"
\n" ); document.write( "\"y%5BAB%5D=3-4t-3\"
\n" ); document.write( "\"y%5BAB%5D=-4t\"
\n" ); document.write( "[AB]=[3t,-4t]
\n" ); document.write( "
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