document.write( "Question 661678: I am using the point slope to write an equation. The points given are P (0,0) and Q (4,4). not sure where to begin \n" ); document.write( "

Algebra.Com's Answer #411744 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
2 points are all you need to determine a straight line
\n" ); document.write( "This is the formula:
\n" ); document.write( " $\"+%28+y+-+0+%29+%2F+%28+x+-+0+%29+=+%28+4+-+0+%29+%2F+%28+4+-+0+%29+\"$
\n" ); document.write( " $\"+y%2Fx+=+4%2F4+\"$
\n" ); document.write( " $\"+y%2Fx+=+1+\"$
\n" ); document.write( " $\"+y+=+x+\"$
\n" ); document.write( "This is a line with slope = +1 and y-intercept at the origin
\n" ); document.write( "The formula is just
\n" ); document.write( "( change in y ) / ( change in x ) = ( change in y ) / ( change in x )
\n" ); document.write( " \n" ); document.write( "

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