document.write( "Question 255950: write a linear equation in y-intercept form
\n" ); document.write( "(2,4), slope =2\r
\n" ); document.write( "\n" ); document.write( "(5,4) slope =-2\r
\n" ); document.write( "\n" ); document.write( "(5,-7) slope =3\r
\n" ); document.write( "\n" ); document.write( "Find th slope\r
\n" ); document.write( "\n" ); document.write( " (1, -3) (8,5) \n" ); document.write( "

Algebra.Com's Answer #188286 by EMStelley(208) $\"\"$ $\"About$

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Remember that if you have a slope m and a point (x1,y1), the equation for the line is:\r
\n" ); document.write( "\n" ); document.write( "y-y1=m(x-x1)\r
\n" ); document.write( "\n" ); document.write( "So for the first problem we have m=2 and (x1,y1)=(2,4). So we have:\r
\n" ); document.write( "\n" ); document.write( "y-4=2(x-2)
\n" ); document.write( "y-4=2x-4
\n" ); document.write( "y=2x\r
\n" ); document.write( "\n" ); document.write( "The next two are similar, so this should help you complete that. For the question about slope, if you have two points (x1,y1) and (x2,y2) the slope is:\r
\n" ); document.write( "\n" ); document.write( " $\"m=%28y2-y1%29%2F%28x2-x1%29\"$ \n" ); document.write( "

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