Question

Determine whether the formula describes y as a function of x. Explain your reasoning.

y = -3x2 - 7x - 6

Answer 1

do you know what the graph looks like?

Answer 2

no

Answer 3

it is a quadratice (degree 2 ) polynomial with negative leading coefficient
this means it is a parabola that opens down

Answer 4

*quadratic

Answer 5

looks like this
http://www.wolframalpha.com/input/?i=y+%3D+-3x^2+-+7x+-+6

Answer 6

which pretty clearly passes the vertical line test, meaning that each \(x\) corresponds to one \(y\) making it a function

Answer 7

okay, thank you!