document.write( "Question 63713: 1. Find the slope of the line that passes through the points (-3, -5) and (3, 2).\r
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document.write( "2. Find the equation, in slope-intercept form, of the line that passes through the points (-3, 1) and (-2, -5).\r
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document.write( "3. Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x – 2y = 24 and passing through (1, 3).\r
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document.write( "4. Solve the system of equations using the substitution method.
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document.write( "If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
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document.write( "7x + y = 1
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document.write( "3x + 2y = -9
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Algebra.Com's Answer #48284 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "1. Find the slope of the line that passes through the points (-3, -5) and (3, 2). \n" ); document.write( "slope= [2--5]/[3--3]=7/6 \n" ); document.write( "----------------------------------- \n" ); document.write( "2. Find the equation, in slope-intercept form, of the line that passes through the points (-3, 1) and (-2, -5). \n" ); document.write( "slope = [-5-1]/[-2--3] = [-6]/[1]=-6 \n" ); document.write( "y-1=-6(x--3) \n" ); document.write( "y=-6x-18+1 \n" ); document.write( "y=-6x-17 \n" ); document.write( "--------------\r \n" ); document.write( "\n" ); document.write( "3. Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x – 2y = 24 and passing through (1, 3). \n" ); document.write( "The give line has slope=1/2; The line you want must have slope -2 \n" ); document.write( "y-3=-2(x-1) \n" ); document.write( "y=-2x+5 \n" ); document.write( "------------------------ \r \n" ); document.write( "\n" ); document.write( "4. Solve the system of equations using the substitution method. \n" ); document.write( "If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.” \n" ); document.write( "1st: 7x + y = 1 \n" ); document.write( "2nd: 3x + 2y = -9 \n" ); document.write( "------------- \n" ); document.write( "Solve 1st for y: y=-7x+1 \n" ); document.write( "Substitute into 2nd to solve for x: \n" ); document.write( "3x+2(-7x+1) = -9 \n" ); document.write( "3x-14x+2=-9 \n" ); document.write( "-11x=-11 \n" ); document.write( "x=1 \n" ); document.write( "y=-7(1)+1 \n" ); document.write( "y=-6 \n" ); document.write( "Solution: (1,-6) \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |