SOLUTION: please help!
3x-4y=8 is this a function?? how do you get domain and range?
Algebra.Com
Question 701924: please help!
3x-4y=8 is this a function?? how do you get domain and range?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
3x-4y=8 is this a function?? how do you get domain and range?
**
Rewrite equation to express y in terms of x.
3x-4y=8
4y=3x-8
y=3x/4-2
You can see that for each x there is one y-value; therefore, this is a function by definition.
You can also see that there is no restriction on what the x values can be, so the domain is (-∞,∞) or all real numbers.
To determine range interchange x and y and solve for y. This is equivalent to expressing x in terms of y.
3x-4y=8
3y-4x=8
3y=4x+8
y=4x/3+8/3
You can also see that there is no restriction on what the x values can be, so the range is (-∞,∞) or all real numbers.
RELATED QUESTIONS
In the past, I have had questions asking what the restrictions are to the domain and... (answered by fcabanski)
What is the domain and range of the function of 1/2^x, I do not know how to get the... (answered by stanbon)
Help me please, I just cannot get this!!!
For the given correspondence, writ the... (answered by vleith)
What is the difference between a dependant and an independant varible? And how do you... (answered by funmath)
What is the domain and range of the function f(x)=-2x-7. And how do you get those... (answered by Edwin McCravy)
Please help me with this problem!
For the given correspondence, write the domain and... (answered by lynnlo)
F(t)=50+6.50*t
Is the function but how do I figure out the domain and range for this... (answered by user_dude2008,malaydassharma)
if you have a piecewise function graph with two open dots on one number, is this a... (answered by stanbon)
how do you get the domain and range of
y-5=|3x-1|
(answered by lwsshak3)