document.write( "Question 197064This question is from textbook
\n" ); document.write( ": What are the x-intercept and y-intercept of a linear equation?
\n" ); document.write( "What are their coordinate on a graph?
\n" ); document.write( "How can they be used to graph a line?
\n" ); document.write( "Demonstrate by determining the intercepts of 14x + 7y = 21 \n" ); document.write( "
Algebra.Com's Answer #147732 by RAY100(1637)\"\" \"About 
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let's do example 1st
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\n" ); document.write( "14 x +7y =21
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\n" ); document.write( "making a \"t box\",,,,,,,,,,,x,,,,,,,,,,y
\n" ); document.write( ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,,,,,,,,,,3
\n" ); document.write( ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,3/2,,,,,,0
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\n" ); document.write( "plotting these, (0,3) is the y intercept, that is when x=0
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\n" ); document.write( "(3/2, 0) is the x intercept, that is where y=0
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\n" ); document.write( "plotting on standard x-y coordinates, shows a line with y intercept of 3, and negative slope (-2)
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\n" ); document.write( "checking,,, putting in slope intercept form, y=-2x +3,,, which matches
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\n" ); document.write( "In general, x intercept is found by setting y=0
\n" ); document.write( "and , y intercept is found by setting x =0.
\n" ); document.write( "They are extremely useful in plotting the graph. \n" ); document.write( "
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