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Mathematics 18 Online
OpenStudy (anonymous):

match the function with its domain and range.

OpenStudy (anonymous):

hold on im writing the equation

OpenStudy (anonymous):

\[\sqrt[-]{5*x?}\]

OpenStudy (anonymous):

i didnt mean to put the question mark there

OpenStudy (anonymous):

here are the answer choices D: x < 0.75 & R: y > 3 D: x < 0 & R: y > 7 D: x> -2 & R: y> 0 D:x> 0 & R:y< 0 D: x >- 2 & R: y> 4 D: x> 0 & R: y> 0

OpenStudy (anonymous):

@moha_10

OpenStudy (cherylim23):

You can see that the function is reflected in the x-axis, and begins from zero. You also know that you can't take the square root of any number, thus x as to be positive, leaving you with the fourth or sixth option. The square root of a positive number is always positive, put a negative in front, it will always be negative. Thus dom: x>0 and ran: y<0

OpenStudy (anonymous):

YES sorry being late

OpenStudy (anonymous):

lol ur fine and thanks @cherylim23 i knew the range was 0 but i was thinkin something else with the domain so thanks

OpenStudy (anonymous):

oaky domain is from 0 to - infity and range is from 0 to infity

OpenStudy (anonymous):

is that clear @janessia

OpenStudy (anonymous):

yes it is! thanks!

OpenStudy (anonymous):

coz the 5 multipier is just for scaling

OpenStudy (cherylim23):

Your best stab would be to plot the graph if you're unsure about the domain. Keep in mind you cannot take the square root of a negative number. Cheers

OpenStudy (anonymous):

hmmm ohk

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