document.write( "Question 848280: A triangle has vertices J(-2,0), K(4,-3) and L(8,8). \r
\n" ); document.write( "\n" ); document.write( "a) Find the equation for the altitude from vertex L to side JK
\n" ); document.write( "b) Find the length of the altitude
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Algebra.Com's Answer #510990 by josgarithmetic(39617)\"\" \"About 
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Part (a) is done like this:\r
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\n" ); document.write( "\n" ); document.write( "(1) Use J and K to find the line JK.
\n" ); document.write( "(2) Solve for y and identify the slope of JK.
\n" ); document.write( "(3) Form the negative reciprocal of the slope of JK, calling it m.
\n" ); document.write( "(4) As slope intercept form, the altitude is on a line, y=mx+b.
\n" ); document.write( "(5) Using b=y-mx, substitute coordinates of point L(8,8) and compute b.
\n" ); document.write( "(6) Steps 4 and 5 give you information to write the line which contains this altitude.
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