document.write( "Question 1017089: Suppose f(x) is a linear function such that f(-1/2)=-7 and f(1)=-3. What is f(-3)? \n" ); document.write( "
Algebra.Com's Answer #633437 by amarjeeth123(570)\"\" \"About 
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Let the linear function be a+bx
\n" ); document.write( "We have a-(b/2)=-7............equation 1
\n" ); document.write( "a+b=-3........................equation 2
\n" ); document.write( "Subtracting equation 1 from equation 2 we get,
\n" ); document.write( "b+(b/2)=4
\n" ); document.write( "3b/2=4
\n" ); document.write( "b=8/3
\n" ); document.write( "From equation 2 we get,
\n" ); document.write( "a=-3-8/3=-17/3
\n" ); document.write( "The linear function is (-17/3)+(8/3)x.
\n" ); document.write( "Verification steps:
\n" ); document.write( "a+b=-17/3+8/3=-9/3=-3
\n" ); document.write( "a-(b/2)=-17/3+(8/3)(-1/2)=-21/3=-7
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