SOLUTION: I am having trouble understanding what to do for my Algebra 2 homework. The Instructions say to: Graph the function, then determine the domain and range. y = sqrt (x + 4)

Algebra ->  Rational-functions -> SOLUTION: I am having trouble understanding what to do for my Algebra 2 homework. The Instructions say to: Graph the function, then determine the domain and range. y = sqrt (x + 4)       Log On


   

Question 704953: I am having trouble understanding what to do for my Algebra 2 homework.
The Instructions say to: Graph the function, then determine the domain and range.
y = sqrt (x + 4) *y = the square root of x + 4
I do not know how to graph the equation or find the domain and range. Please help as best you can! Thank you!
Answer by josgarithmetic(39614) About Me  (Show Source):
You can put this solution on YOUR website!
Do you mean, y=sqrt%28x%2B4%29, and restating as "y equals square root of the quantity, x plus 4"? The asterisk creates confusion.

y%5E2=%28sqrt%28x%2B4%29%29%5E2
y%5E2=x%2B4
x=y%5E2-4

Parabola with vertex at the left; parabola opens to the right.

Excuse me; I gave some help but did not completely answer the question. The original function is the square root function, shifted 4 units to the left.