document.write( "Question 1002125: Find f(3), given that f is a linear function with f(1)=2 and f(4)=-7 \n" ); document.write( "

Algebra.Com's Answer #619107 by rothauserc(4718) $\"\"$ $\"About$

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m = (-7 -2) / (4 - 1) = -3
\n" ); document.write( "2 = -3 + b
\n" ); document.write( "b = 5
\n" ); document.write( "f(3) = -3*3 + 5 = -4
\n" ); document.write( "note that the linear function is f(x) = -3x + 5
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