document.write( "Question 101240: If f(x)= 4x-3 then find f(-1).
\n" ); document.write( "I really do not understand the whole function notation. Any help that can be given or any words to go by would be very much appreciated. Thanks. \n" ); document.write( "
Algebra.Com's Answer #73739 by bucky(2189)\"\" \"About 
You can put this solution on YOUR website!
Given:
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\n" ); document.write( "f(x) = 4x - 3
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\n" ); document.write( "The problem asks you to find f(-1).
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\n" ); document.write( "All that this is telling you to do is to evaluate f(x) when x equals -1. So, just go to the
\n" ); document.write( "given f(x) and substitute -1 for every x.
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\n" ); document.write( "Starting with:
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\n" ); document.write( "f(x) = 4x - 3
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\n" ); document.write( "replacing every x by -1 results in:
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\n" ); document.write( "f(-1) = 4*(-1) - 3
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\n" ); document.write( "and since 4 times (-1) equals -4 the equation becomes:
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\n" ); document.write( "f(-1) = -4 - 3
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\n" ); document.write( "And on the right side the -4 and the -3 combine to -7. Therefore, the equation is finally
\n" ); document.write( "reduced to:
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\n" ); document.write( "f(-1) = -7
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\n" ); document.write( "And this is the answer you were asked to find.
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\n" ); document.write( "Hope this helps you to understand how to do problems such as these by just substituting
\n" ); document.write( "for x the value given in the parentheses and then combining the terms as much as possible
\n" ); document.write( "to reduce the answer.
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