I need to find the domain of the function S(y)=5y / y+7?

Question

I need to find the domain of the function S(y)=5y / y+7?

Answer 1

I need to find the domain of the function S(y)=5y / y+7?

Domain of this function is from negative infinity to finity;

except number -7.

Notation:

D = {5y / y+7 I  all #s; except -7}

Hope it helps.

W.

Answer 2

The domain refers to the possible x values while the range refers the possible y values, since you are looking for the domain in an equation that has no x values the domain is all real numbers, there's no reason x can't be -7 just because y can't be -7

Answer 3

Domain = 0 - any greater number (0 is less than or equal to y is greater than or equal to any greater number)

Did you mean practical domain?

Answer 4

the domain is all y except y=-7 because it is the only place where S(y) is undefined. It makes the denominator equal to 0.

Answer 5

I assume that you meant to write 5y/(y+7)

When evaluating domains, the two key points are to avoid even roots of negative numbers and zeros in the denominators. There are no radicals, and only one denominator so

y + 7 = 0 -> y = -7

Therefore, the domain is all real numbers except y = -7