Domain and range....?

Question

Describe the domain and range of a quadratic function that has exactly one zero and whose graph opens downward..

Answer 1

Domain is all real numbers: -inf < x < inf

Range is all non-positive numbers: y ≤ 0



If it has exactly one zero and opens downward, then the curve is a parabola that it tangent to the x-axis and lies below the x-axis in the region of negative y values.

Answer 2

Domain is all real numbers, because the domain is the values of "x" it can take on. If a parabola opens downwards, it'll hit all numbers.

Range is all negative numbers, and zero. Because that's the values of "y" it can take on.

Answer 3

If the function has only one zero and the graph opens downward, the entire curve is below the x-axis, so



Domain: all real x



Range: all real y | y ≤ 0

....

Answer 4

area = the set of each and all the x values so D = { -4, -3, -2, -a million} variety = the set of all y values so R = { -5, -8, -11, -14} and it quite is a function if each and all the x coordinate are distinctive, so it quite is a function.

Answer 5

domain domain x! and range y!