document.write( "Question 250685: graph the function\r
\n" );
document.write( "\n" );
document.write( "f(x)=-1/2|x-4|+5 \n" );
document.write( "
Algebra.Com's Answer #185027 by drk(1908)![]() ![]() ![]() You can put this solution on YOUR website! Since this is absolute value function, we should be able to tell 3 things just by looking at the function: \n" ); document.write( "(i) vertex \n" ); document.write( "(ii) open up or down \n" ); document.write( "(iii) wide, regular, skinny graph \n" ); document.write( "--- \n" ); document.write( "(i) The vertex is at (4,5) \n" ); document.write( "(ii) It opens down, because there is a (-) sign in front of the absolute value. \n" ); document.write( "(iii) It is wide since there is a 1/2 in front of the absolute value. \n" ); document.write( "-- \n" ); document.write( "to graph, plot (4,5). Then pick x = 2. We get \n" ); document.write( "-1/2|2-4|+5 = 4. So, (2.4) \n" ); document.write( "Now pick x = 6. \n" ); document.write( "-1/2|6-4|+5 = 4. So, (6,4). \n" ); document.write( "Make a rough sketch and you are done. \n" ); document.write( " |