document.write( "Question 1164175: Find the equation of the given linear function.
\n" ); document.write( "f(x) =\r
\n" ); document.write( "\n" ); document.write( "x
\n" ); document.write( "−15 0 15 20
\n" ); document.write( "f(x)
\n" ); document.write( "−2 −5 −8 −9\r
\n" ); document.write( "\n" ); document.write( "for your better understanding the numbers were in a table and it was numbers of x then the numbers of f(x) \n" ); document.write( "
Algebra.Com's Answer #788481 by Alan3354(69443)\"\" \"About 
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Find the equation of the given linear function.
\n" ); document.write( "f(x) =\r
\n" ); document.write( "\n" ); document.write( "x
\n" ); document.write( "−15 0 15 20
\n" ); document.write( "f(x) = y
\n" ); document.write( "−2 −5 −8 −9
\n" ); document.write( "--------------------------
\n" ); document.write( "Assuming it is linear, pick any 2 of the points.
\n" ); document.write( "eg, (0,-5) and 15,-8)
\n" ); document.write( "Find the slope m:
\n" ); document.write( "m = diffy/diffx = -3/15 = -1/5
\n" ); document.write( "----
\n" ); document.write( "Use y-y1 = m*(x-x1) where (x1,y1) is any of the given points.
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\n" ); document.write( "I would check all the points to see if they're on the line - satisfy the equation.
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