can someone help me and find helpful tips with 9th grade coordinate algebra?

Question

anonymous · Answer

Possibly, what's your question?

anonymous · Answer

i just need some help on that subject, like for examole the topic im on is writing and evaluating expressions

anonymous · Answer

or components of an algebraic expression

anonymous · Answer

Hmmm. Do you have any examples of questions? I'm not sure what you mean by coordinate algebra, but if I saw a problem, I'm sure I could help. There are lots of components of algebraic expressions, depending on the expression.

anonymous · Answer

example:

susan is four years older than half nathans age. if nathan's age is represented by the variable n, what expression represents susans age?

anonymous · Answer

Sure, so in that one n=nathan's age. if susan is 4 years older, you'd have$$n+4=susan's~age$$You have a constant which is 4 and the variable, which is n. 4 is the same no matter what n is. So, n can be anything (technically. in this question it should be positive). Susan is always going to be 4 years older so the 4 won't change.

anonymous · Answer

You could write this$$f(n)=n+4$$no matter what you put in for n, you come out with Susan's age. Hopefully, that isn't getting too far ahead of things.

anonymous · Answer

oh ok, so all i have to do now is solve that equation and i get the answer!?

anonymous · Answer

Yep. You'd have a graph that looks like this|dw:1408628441667:dw|

anonymous · Answer

Yep. All you do is enter an age for n and you get susan's age. So in that graph, you can see if Nathan is 0, Susan is 4. If Nathan is 3, Susan is 7.

anonymous · Answer

oh! ok i get it now, thanks for the help :)

anonymous · Answer

yep, no problem.

phi · Answer

just to tweak the answer:

**susan is four years older than half nathans age.***
as you read this sentence, try to "toss out"  irrelevant words.  Look for numbers and "unknowns"

translate "is"  to =
translate   more than as +
susan     is      four years older than half nathans age
susan     =         4             +              n/2

notice that "half nathan's age"  means  nathan's age divided by 2. i.e. n/2

shorten susan to just a 1 letter variable that stands for susan's age
s  =  4 + n/2

anonymous · Answer

Oh goodness. Yep, I didn't read the half in the problem. Sorry @aryleen.tomlinson1234. Same idea, but phi has the correct answer to your problem.