Give a formula for a function whose graph is described. Sketch it using a computer or calculator.

A cone of a circular cross-section opening downward and with its vertex at the origin.

Question

Give a formula for a function whose graph is described. Sketch it using a computer or calculator.

A cone of a circular cross-section opening downward and with its vertex at the origin.

anonymous · Answer

The graph of y = - |x| would look like that.  I'm pretty sure that's what they are looking for.

anonymous · Answer

Have you learned absolute values yet?

megannicole51 · Answer

yes, im in college calc 2, i know what an absolute value is but how does that pertain to the question?

ganeshie8 · Answer

@ikram002p

anonymous · Answer

They want the formula for a function.   The function that would look like an upside down cone starting at (0,0) is f(x) = - |x|.  Do you think that's what they're looking for?  Picture holding a pointy snow cone cup upside down.  The cone has a circulat cross section if you cut it straight.  Look up conic sections to see the different ways to cut a cone.

megannicole51 · Answer

oooh okay makes sense! thank you:) let me see what i can find!

ikram002p · Answer

z2=x2+y2
gives u two cone u wanna oly one
so take root and make it negative
z=-root(x2+y2)|dw:1386007738843:dw|

anonymous · Answer

This looks better than my answer.  Thanks ikram002p!

ikram002p · Answer

but still ur answer is correct cuz the cone need to be cuted :)

megannicole51 · Answer

thank you omgsh!