document.write( "Question 46747: Find an equation in slope-intercept form passing through the points (-6.2,18.1) and (-3.4,18.1). \n" ); document.write( "

Algebra.Com's Answer #30974 by adamchapman(301) $\"\"$ $\"About$

You can put this solution on YOUR website!
I have provided an example here. Just plug in your own values and follow my method. I promise it will work
\n" ); document.write( "The eqautaion $\"y=-mx%2Bb\"$ is the equation of a straight line. $\"m\"$ is the gradient of that line, and $\"b\"$ is the y-axis intercept. The y-axis intercept is the value of y when x=0. \r
\n" ); document.write( "\n" ); document.write( "Try to remember this equation: $\"%28y-y%5B1%5D%29%2F%28y%5B2%5D-y%5B1%5D%29=%28x-x%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"$
\n" ); document.write( "where (x1,y1) and (x2,y2) are points on the line. It is an EXTREMELY important equation.
\n" ); document.write( "Lets do an example:
\n" ); document.write( "(x1,y1)=(1,2)
\n" ); document.write( "(x2,y2)=(3,4)
\n" ); document.write( "substitute these values into $\"%28y-y%5B1%5D%29%2F%28y%5B2%5D-y%5B1%5D%29=%28x-x%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"$ :
\n" ); document.write( " $\"%28y-2%29%2F%284-2%29=%28x-1%29%2F%283-1%29\"$ and then rearrange to give y in terms of x:
\n" ); document.write( " $\"%28y-2%29%2F2=%28x-1%29%2F2\"$
\n" ); document.write( " $\"y=x%2B1\"$
\n" ); document.write( "so comparing with \"y=mx+b\", m=1 and b=1.\r
\n" ); document.write( "\n" ); document.write( "I hope this helps,
\n" ); document.write( "Adam.
\n" ); document.write( "P.S. please check out my website, it may be helpful to you:
\n" ); document.write( "http://www.geocities.com/quibowibbler \n" ); document.write( "

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