document.write( "Question 157640This question is from textbook algebra 2
\n" ); document.write( ": write an equation in slope-intercept form for the line that satisfies the following condition. slope 1/3and passes through (3,9) \n" ); document.write( "
Algebra.Com's Answer #116178 by Electrified_Levi(103)\"\" \"About 
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Hi, Hope I can help
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\n" ); document.write( "write an equation in slope-intercept form for the line that satisfies the following condition. slope \"+1%2F3+\" and passes through (3,9)
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\n" ); document.write( "The slope intercept form of an equation is equal to \"+y+=+mx+%2B+b+\", where \"m\" is the slope, \"b\" is the y intercept.
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\n" ); document.write( "We know the slope is \"+1%2F3+\", so we can replace \"m\" with \"+1%2F3+\" in our equation
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\n" ); document.write( "\"+y+=+mx+%2B+b+\", becomes \"+y+=+%281%2F3%29x+%2B+b+\", now we have to find \"b\"
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\n" ); document.write( "We now a point on the line, point (3,9), and because points are given as (x,y), we can use the point to solve for \"b\"
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\n" ); document.write( "If the point is (3,9)(x,y), all we need to do is replace \"x\" and \"y\" in our equation, with the numbers(replace \"x\" with \"3\", replace \"y\" with \"9\")
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\n" ); document.write( "\"+y+=+%281%2F3%29x+%2B+b+\", becomes \"+%289%29+=+%281%2F3%29%283%29+%2B+b+\"
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\n" ); document.write( "\"+%289%29+=+%281%2F3%29%283%29+%2B+b+\" = \"+%289%29+=+%281%29+%2B+b+\"
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\n" ); document.write( "\"+%289%29+=+%281%29+%2B+b+\" = \"+9+=+1+%2B+b+\", to find \"b\" we will move \"1\" to the left side
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\n" ); document.write( "\"+9+=+1+%2B+b+\" = \"+9+-+1+=+1+-+1+%2B+b+\"
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\n" ); document.write( "\"+9+-+1+=+1+-+1+%2B+b+\" = \"+8+=+b+\" = \"+b+=+8+\"
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\n" ); document.write( "We found that \"b\" = \"8\", we can replace \"b\" with \"8\" in our equation
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\n" ); document.write( "\"+y+=+%281%2F3%29x+%2B+b+\" = \"+y+=+%281%2F3%29x+%2B+8+\"
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\n" ); document.write( "\"+y+=+%281%2F3%29x+%2B+8+\" is the slope-intercept form/equation of the line
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\n" ); document.write( "We can check our answer by replacing \"x\" and \"y\" with (3,9)(x,y) in our equation
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\n" ); document.write( "\"+y+=+%281%2F3%29x+%2B+8+\" = \"+%289%29+=+%281%2F3%29%283%29+%2B+8+\"
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\n" ); document.write( "\"+%289%29+=+%281%2F3%29%283%29+%2B+8+\" = \"+%289%29+=+%281%29+%2B+8+\"
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\n" ); document.write( "\"+%289%29+=+%281%29+%2B+8+\" = \"+9+=+1+%2B+8+\" = \"+9+=+9+\" (True)
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\n" ); document.write( "We can also find that the y intercept(where the line hits the y-axis) is (0,8), another point on the line,
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\n" ); document.write( "We can check by replacing \"x\" and \"y\" with (0,8)(x,y),
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\n" ); document.write( "\"+y+=+%281%2F3%29x+%2B+8+\" = \"+%288%29+=+%281%2F3%29%280%29+%2B+8+\"
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\n" ); document.write( "\"+%288%29+=+%281%2F3%29%280%29+%2B+8+\" = \"+%288%29+=+%280%29+%2B+8+\"
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\n" ); document.write( "\"+%288%29+=+%280%29+%2B+8+\" = \"+8+=+0+%2B+8+\" = \"+8+=+8+\" (True)
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\n" ); document.write( "The slope-intercept form/equation of the line is \"+y+=+%281%2F3%29x+%2B+8+\"
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\n" ); document.write( "Hope I helped, Levi
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