SOLUTION: How can I determine if the equation y=3x-5 is a function or not? please I really can't understand math lessons easily please help me thankyou

Question 1038909: How can I determine if the equation y=3x-5 is a function or not? please I really can't understand math lessons easily please help me thankyou

Found 2 solutions by ikleyn, rothauserc:
Answer by ikleyn(52802) (Show Source): You can put this solution on YOUR website!
.
From the context.

You can determine it from the context.

-----------------------------------

In the following post the tutor "rothauserc" writes

". . . y = x^2 is not a function . . . ".

In contrary, IT IS, as everybody knows.

Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
a function relates an input to a single output
:
f(x) = 3x - 5
:
f(1) = -2
:
f(2) = 1
:
f(3) = 4
:
a graph of this function is
:

:
from the graph, we see that an input (x axis values) are related to a single output (y axis values)
:
note that y = x^2 is not a function since -2 and 2 are related to the same value 4
:
RELATED QUESTIONS
I am really stuggling in Elementary and Intermediate Algebra. Math does not come very... (answered by scott8148,jam123)
I need your help with this problem: Determine a relationship between the x and y values.... (answered by checkley71,edjones)
I am trying to graph a function and I understand how to solve it. What I do not... (answered by stanbon)
The book is Algebra, 3/e, by K. Elayn Martin-Gay! Determine whether each of the... (answered by checkley75)
How can i understand functions easily without having... (answered by Fombitz)
Can some1 please help me? i need my math done before 8:00pm tonight, and i really do not... (answered by longjonsilver)
ok here's a few i'm not sure if they're right or not and the last one I just can't seem... (answered by stanbon)
determine whether the graphs of the equation are parallel, perpendicular, or neither... (answered by richwmiller,erica65404)
Complex numbers If z=rcis(theta) FIND: |iz^2| I am confused about how I... (answered by ikleyn)