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Mathematics 24 Online
OpenStudy (mathguy5):

Help please http://prntscr.com/bvhevn

jimthompson5910 (jim_thompson5910):

Any quadratic function will have a domain of all real numbers. There are no restrictions for x. This is because we don't have to worry about division by zero errors or taking the square root of a negative number.

jimthompson5910 (jim_thompson5910):

|dw:1469062579844:dw|

jimthompson5910 (jim_thompson5910):

what is the smallest y value possible?

OpenStudy (mathguy5):

-8 ?

jimthompson5910 (jim_thompson5910):

yes, so the range is \[\Large y \ge -8\]

jimthompson5910 (jim_thompson5910):

which means y can be any number as long as it's greater than -8 or equal to -8. You cannot have any smaller y value (eg: y = -10 is not possible)

jimthompson5910 (jim_thompson5910):

make sure you use interval notation

OpenStudy (mathguy5):

Did i write the answers correctly? @jim_thompson5910 http://prntscr.com/bvhhem

jimthompson5910 (jim_thompson5910):

yes both are correct

OpenStudy (mathguy5):

Thank you!!!

jimthompson5910 (jim_thompson5910):

no problem

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