Thursday

December 18, 2014

December 18, 2014

Posted by **Milia** on Sunday, June 5, 2011 at 5:35am.

ie. y=1/2x-7 (how do i tell if this is a funtion or not)?

Any help would be much appreciated :)

- Math -
**Andy**, Sunday, June 5, 2011 at 6:28amwhen dealing with linear functions, the general formula is y= mx + c..where m is the gradient and c is the y-intercept. To find the value of x simply make y = to zero.hence the equation(y=1/2-7) is a linear function because if substituted in the general formula,1/2 would be the gradient(since it is the value/coefficient of x),, c=-7 and x=-1.

- Math -
**drwls**, Sunday, June 5, 2011 at 6:28amPlease use parentheses where needed for clarity. I don't know if that is

1/(2x-7) or (x/2) -7 or (1/2x) -7

In each case, y is clearly a function of x because there is one and only one y for each x. (Except possibly where a denominator vanishes)

- Math -
**Milia**, Sunday, June 5, 2011 at 6:40amthanks :)

**Answer this Question**

**Related Questions**

math,help - I definately do not understand this problem. If y varies directly ...

math - How do I know that x^2-7=y is a function? thanks you know its a function ...

help - Tell wheher each represents a funtion. Explain minutes= 60 times hours A ...

9th grade - What is the value of c in the equation f(c)=0 with the funtion f(x)=...

maths - the function y = 5 + 3 sin (pie t /3 + pie /2) choose one option which ...

maths - the function y = 5 + 3 sin (pie t /3 + pie /2) choose one option which ...

Math(check) - 1)Find the range of the relation [(-1,4)},(2,5),(3,5)}.Then ...

algebra - i have very little information in my math book on the following ...

CountIblis, can i bother you - Countiblis, i know that you might be busy do you ...

math - can some one help me ... determind the equation of g(x) that results ...