What is the domain and range of the quadratic equation y = –2x2 – 32x – 126?

Domain: All Real Numbers
Range: y –8

Domain: All Real Numbers
Range: y –8

Domain: All Real Numbers
Range: y 2

Domain: All Real Numbers
Range: y 2

Question

What is the domain and range of the quadratic equation y = –2x2 – 32x – 126?

 Domain: All Real Numbers
Range: y  –8

 Domain: All Real Numbers
Range: y  –8

 Domain: All Real Numbers
Range: y  2

 Domain: All Real Numbers
Range: y  2

anonymous · Answer

please answer..

zepp · Answer

For the domain, you should know that quadratic function's domain is all real numbers.
The slope is negative! So you should find the vertex and it's y value would be the maximum (Range)|dw:1335484237927:dw|