document.write( "Question 919776: The question to this section of homework is: \"graph each equation and determine the domain and range. Determine whether the equation is a function,is one-to-one, onto, both, or neither. Then state whether it is discrete or continuous\"
\n" ); document.write( "All I really need help with is determining the domain and range of y=-x^2
\n" ); document.write( "Also, how do I find out if an algebraic problem is discrete or continuous? I understand with word problems, obviously, I'm just a bit confused on numeric examples like the one above.
\n" ); document.write( "Thank you. \n" ); document.write( "

Algebra.Com's Answer #558013 by richard1234(7193) $\"\"$ $\"About$

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Domain of a function y = f(x) is the set of possible x-values such that y is defined. In this case the domain is the set of all real numbers. The range is the set of all possible values for y (the image). Since -x^2 must be non-positive for real x, the range is (-infinity, 0]. (the ] indicating that 0 is included)\r
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\n" ); document.write( "\n" ); document.write( "y = -x^2 is a continuous function everywhere.\r
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