document.write( "Question 167079: can someone EXPLAIN the steps of finding the x- and y- intercepts of this prblem? \n" );
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Algebra.Com's Answer #123098 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! the x-intercept is when the graph crosses the x-axis __ at this point, y=0 \n" ); document.write( "__ similarly, the value of x is zero at the y-intercept\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "to find the x-intercept, substitute zero for y; and vice versa\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x-intercept __ 12(0)+15(0)+21=4x-5(0)+7 __ 21=4x+7 __ 14=4x __ 3.5=x __ so the x-intercept is (3.5,0)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y-intercept __ 12y+15y+21=4(0)+5y+7 __ 27y+21=5y+7 __ 22y=-14 __ y=-7/11 __ so the y-intercept is (0,-7/11) \n" ); document.write( " |