document.write( "Question 1177262: Let L be the line defined by the vector equation v⃗ =[−4−5]+t[2−4]. Find the equation y=mx+b for L.\r
\n" ); document.write( "\n" ); document.write( "My answer is y= -2x+13 but mark that is wrong. \n" ); document.write( "

Algebra.Com's Answer #805640 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "you made mistake, it's $\"-13\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "v⃗ =[6, −1]+t[5, 6]. .......................v⃗ =[-4,-5]+t[2,-4]
\n" ); document.write( "[ x y ] = [-4,-5 ] + t[2,-4] \r
\n" ); document.write( "\n" ); document.write( " $\"x=-4%2B+2t\"$ ....multipl by 2\r
\n" ); document.write( "\n" ); document.write( " $\"2x=-8%2B+4t\"$ .....eq.1\r
\n" ); document.write( "\n" ); document.write( " $\"y=-5-4t+\"$ .....eq.2 \r
\n" ); document.write( "\n" ); document.write( "solve the system:\r
\n" ); document.write( "\n" ); document.write( " $\"2x=-8%2B4t+\"$
\n" ); document.write( " $\"y=+-5+-4t\"$
\n" ); document.write( "------------------add
\n" ); document.write( " $\"2x%2By=-8%2B4t+-5-4t\"$
\n" ); document.write( " $\"2x%2By=-13\"$
\n" ); document.write( " $\"y=-2x-13\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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