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) ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " \n" ); document.write( " |