document.write( "Question 70024: Ok, i have always told me kids they can come to me with any question on homework...im in over my head here. I dont even remember working on this stuff...
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document.write( "If u can just direct me with a few examples i should be able to figure it out...thank you for any n all help\r
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document.write( "example of questions:\r
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document.write( "find equation of the line passing through the given points...\r
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document.write( "(1,5)(2,7) possible answers r --- y=2/3x+3 or y=1/2x-4\r
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document.write( "huh? please help me \n" );
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Algebra.Com's Answer #49860 by tutorcecilia(2152)![]() ![]() You can put this solution on YOUR website! (1,5)(2,7) \n" ); document.write( "Use the formula for the slope of a line: \n" ); document.write( "m= \n" ); document.write( "m= \n" ); document.write( ". \n" ); document.write( "Next, use the slope-intercept formula of a line: \n" ); document.write( "y=mx+b \n" ); document.write( "y=any y value of the line \n" ); document.write( "m=the slope of the line \n" ); document.write( "x=any corresponding x value \n" ); document.write( "b=the y-intercept (where the line crosses the y-axis) \n" ); document.write( ". \n" ); document.write( "y=mx+b [plug-in the values] \n" ); document.write( "5=(2)(1)+b [plug-in the values of any one point plus and the value of the slope and solve for \"b\"] \n" ); document.write( "5=2+b \n" ); document.write( "5-2=2-2+b \n" ); document.write( "3=b \n" ); document.write( ". \n" ); document.write( "Since we are finding the slope-intercept equation of a line, all we need to plug-in is the slope and the y-intercept: m=2 and b=3 \n" ); document.write( "y=2x+3 \n" ); document.write( ". \n" ); document.write( "Check by plug-in one of the points: Try (1,5) \n" ); document.write( "y=2x+3 \n" ); document.write( "5=(2)(1)+3 \n" ); document.write( "5=2+3 \n" ); document.write( "5=5 [checks out]\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |