document.write( "Question 83115: Help!!! I'm having a very hard time with this exam review.
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document.write( "Determine the linear function whose graph is a line with a slope of 5/7 and contains the point (-1,5). Thanks! \n" );
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Algebra.Com's Answer #59653 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Determine the linear function whose graph is a line with a slope of 5/7 and contains the point (-1,5). \n" ); document.write( ": \n" ); document.write( "There is a formula called the \"Point/slope\" formula. Memorize this and you won't have any problem with it: y - y1 = m(x - x1) \n" ); document.write( ": \n" ); document.write( "In your problem the slope (m) = 5/7; x1 = -1; y1 = 5; substitute these values. \n" ); document.write( ": \n" ); document.write( "y - 5 = (5/7)(x - (-1)) \n" ); document.write( "y - 5 = (5/7)(x + 1); remember minus a minus is a plus \n" ); document.write( "y = 5 = (5/7)x + (5/7); multiply what's inside the brackets \n" ); document.write( "y = (5/7)x + 5/7 + 5 \n" ); document.write( "y = (5/7)x + 5/7 + 35/7; changed 5 to 35/7 \n" ); document.write( "y = (5/7)x + 40/7 \n" ); document.write( ": \n" ); document.write( "If they want in the standard form, multiply the equation by 7 and rearrange: \n" ); document.write( "-5x + 7y = 40 \n" ); document.write( ": \n" ); document.write( "Remember you can always check to see if you are right by substituting -1 \n" ); document.write( "for x and 5 for y in the above equation to see if it = 40 \n" ); document.write( ":\r \n" ); document.write( "\n" ); document.write( "Did this help? \n" ); document.write( " |