document.write( "Question 466443: What's the equation of the given lines in standard form?? Help Been stuck for hours\r
\n" ); document.write( "\n" ); document.write( "). The line with m = 4 and intersecting 2x -4y = 8 at x = 6.\r
\n" ); document.write( "\n" ); document.write( "2.) The line through (2, -1) and parallel to x - 2y = 6.\r
\n" ); document.write( "\n" ); document.write( "3.) The line with m = 4 and the point (0, -9).\r
\n" ); document.write( "\n" ); document.write( "4.)The line with a slope of -1/3 and b of 6.\r
\n" ); document.write( "\n" ); document.write( "5.)The line including two points (6, 4) and (-5, 3).
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Algebra.Com's Answer #319783 by ccs2011(207)\"\" \"About 
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Standard form of equation of a line:
\n" ); document.write( "Ax + By = C
\n" ); document.write( "Slope-intercept form of equation of a line:
\n" ); document.write( "y = mx + b
\n" ); document.write( "Point slope form of equation of a line:
\n" ); document.write( "(y - y1) = m(x - x1)\r
\n" ); document.write( "\n" ); document.write( "1) *************************************************
\n" ); document.write( "m = 4
\n" ); document.write( "Now we need a point on the line, the point where the 2 lines intersect at x=6
\n" ); document.write( "To find y value, substitute in 6 for x and solve for y.
\n" ); document.write( "\"2%286%29+-+4y+=+8\"
\n" ); document.write( "\"12+-4y+=+8\"
\n" ); document.write( "Subtract 12 on both sides
\n" ); document.write( "\"-4y+=+-4\"
\n" ); document.write( "Divide by -4 on both sides
\n" ); document.write( "\"y+=+1\"
\n" ); document.write( "Thus the point is (6,1)
\n" ); document.write( "We have slope and a point, use point-slope form:
\n" ); document.write( "\"y-1+=+4%28x-6%29\"
\n" ); document.write( "Distribute
\n" ); document.write( "\"y-1+=+4x+-24\"
\n" ); document.write( "Subtract 4x on both sides
\n" ); document.write( "\"-4x+%2By+-1+=+-24\"
\n" ); document.write( "Add 1 on both sides
\n" ); document.write( "\"-4x+%2B+y+=+-23\"
\n" ); document.write( "This is the equation of the line in standard form\r
\n" ); document.write( "\n" ); document.write( "2)***********************************************************
\n" ); document.write( "Parallel lines have equal slopes
\n" ); document.write( "Convert line x - 2y = 6 to slope-intercept form:
\n" ); document.write( "\"x+-+2y+=+6\"
\n" ); document.write( "Subtract x on both sides
\n" ); document.write( "\"-2y+=+-x+%2B6\"
\n" ); document.write( "Divide by -2 on both sides
\n" ); document.write( "\"y+=+x%2F2+-+3\"
\n" ); document.write( "From y=mx +b we see that \"m=1%2F2\"
\n" ); document.write( "Point on the line is (2,-1)
\n" ); document.write( "We have slope and a point, use point-slope form:
\n" ); document.write( "\"y%2B1+=+%281%2F2%29%28x-2%29\"
\n" ); document.write( "Distribute
\n" ); document.write( "\"y%2B1+=+x%2F2+-+1\"
\n" ); document.write( "Subtract x/2 on both sides
\n" ); document.write( "\"-x%2F2+%2B+y+%2B1+=+-1\"
\n" ); document.write( "Subtract 1 on both sides
\n" ); document.write( "\"-x%2F2+%2B+y+=+-2\"
\n" ); document.write( "Cannot have fractions in standard form
\n" ); document.write( "Multiply equation by 2 to cancel denominators
\n" ); document.write( "\"-x+%2B+2y+=+-4\"
\n" ); document.write( "This is the equation of the line in standard form\r
\n" ); document.write( "\n" ); document.write( "3)*******************************************************
\n" ); document.write( "m = 4
\n" ); document.write( "point on the line is (0,-9)
\n" ); document.write( "We have slope and a point, use point-slope form:
\n" ); document.write( "\"y+%2B+9+=+4%28x+-+0%29\"
\n" ); document.write( "Distribute
\n" ); document.write( "\"y%2B9+=+4x\"
\n" ); document.write( "Subtract 4x on both sides
\n" ); document.write( "\"-4x+%2By+%2B9+=+0\"
\n" ); document.write( "Subtract 9 on both sides
\n" ); document.write( "\"-4x+%2B+y+=+-9\"
\n" ); document.write( "This is the equation of the line in standard form\r
\n" ); document.write( "\n" ); document.write( "4)**********************************************************
\n" ); document.write( "slope = m = -1/3
\n" ); document.write( "y_intercept = b = 6
\n" ); document.write( "We have slope and y_intercept, use slope-intercept form:
\n" ); document.write( "y=mx+b
\n" ); document.write( "\"y+=+-%28x%2F3%29+%2B+6\"
\n" ); document.write( "Add x/3 on both sides
\n" ); document.write( "\"%28x%2F3%29%2By+=+6\"
\n" ); document.write( "Cannot have fractions in standard form
\n" ); document.write( "Multiply equation by 3 to cancel out denominator
\n" ); document.write( "\"x+%2B+3y+=+18\"
\n" ); document.write( "This is the equation of the line in standard form\r
\n" ); document.write( "\n" ); document.write( "5) **********************************************************
\n" ); document.write( "Given 2 points (6,4) and (-5,3)
\n" ); document.write( "Find slope using slope formula:
\n" ); document.write( "\"m+=+%28y2+-+y1%29%2F%28x2-x1%29\"
\n" ); document.write( "\"m+=+%283-4%29%2F%28-5-6%29\"
\n" ); document.write( "\"m+=+%28-1%29%2F-11\"
\n" ); document.write( "Division of 2 negative numbers equals a positive
\n" ); document.write( "\"m+=+1%2F11\"
\n" ); document.write( "Pick one of our points, say (6,4)
\n" ); document.write( "We have slope and a point, use point-slope form:
\n" ); document.write( "\"y-4+=+%281%2F11%29%28x-6%29\"
\n" ); document.write( "Distribute
\n" ); document.write( "\"+y+-4+=+%28x%2F11%29+-+6%2F11\"
\n" ); document.write( "Subtract x/11 on both sides
\n" ); document.write( "\"-%28x%2F11%29+%2B+y+-4+=+-6%2F11\"
\n" ); document.write( "Add 4 on both sides
\n" ); document.write( "Notice we have to add fractions, find common denominator
\n" ); document.write( "4 = 44/11
\n" ); document.write( "-6/11 + 44/11 = 38/11
\n" ); document.write( "\"-%28x%2F11%29+%2B+y+=+38%2F11\"
\n" ); document.write( "Cannot have fractions in standard form
\n" ); document.write( "Multiply equation by 11 to cancel out denominator
\n" ); document.write( "\"-x+%2B+11y+=+38\"
\n" ); document.write( "This is the equation of the line in standard form\r
\n" ); document.write( "\n" ); document.write( "******************************************************
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