document.write( "Question 158316: In each case find the equation of the straight line through the given points (4;7), (-2;2) \n" ); document.write( "

Algebra.Com's Answer #116701 by checkley77(12844) $\"\"$ $\"About$

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(4,7), (-2,2)
\n" ); document.write( "Y+mX+b
\n" ); document.write( "m=(2-7)/(-2-4)
\n" ); document.write( "m=-5/-6
\n" ); document.write( "m=5/6 slope.
\n" ); document.write( "7=5/6*4+b
\n" ); document.write( "7=20/6+b
\n" ); document.write( "b=7-20/6
\n" ); document.write( "b=(42-20)/6
\n" ); document.write( "b=22/6=11/3 y intercept.
\n" ); document.write( "Y=5X/6+11/3
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+15%2C+-10%2C+12%2C+5x%2F6+%2B11%2F3%29+\"$ (graph 300x200 pixels, x from -6 to 15, y from -10 to 12, 5x/6 +11/3). \n" ); document.write( "

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