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Question

e.mccormick · Answer

The rate of change is also know as the slope.  So, which ones have a negative slope?  Or, as the x goes up, the y goes down.

baby_bear69 · Answer

I haven't done this in a while, I forget how to find that out

e.mccormick · Answer

y=mx+b is the one where m is the slope.  So if what would be in the m slot is negative, it is negative slope.

baby_bear69 · Answer

2 is negative, but how do I figure out if 1 is, the equation trips me up

e.mccormick · Answer

Solve for y.

e.mccormick · Answer

On the charts, well, it is this basic principal:

$\begin{matrix}
x & y\ 
1 & 1\ 
2 & 2\ 
3 & 3 
\end{matrix}$

As x goes up, y goes up, so positive.

\begin{matrix}
x & y\ 
1 & 3\ 
2 & 2\ 
3 & 1 
\end{matrix}

As x goes up, y goes down, so negative.

baby_bear69 · Answer

I got 1.Negative 2.Negative 3.Positive 4. Positive

baby_bear69 · Answer

Sorry, i'm dumb :p

e.mccormick · Answer

Nah.  You just are not used to doing this.  Cause you did get the answer right in the end.

baby_bear69 · Answer

So I am right? Thank you! Yeah, I am re-doing failed tests that have to be done, and this was back at the beginning of the year..haha

e.mccormick · Answer

Fun, fun.  Well, always good to review.  Math builds up so you need to do it over time, not try and cram it.  Then it makes more sense.

baby_bear69 · Answer

Yeah! (: Thanks again!!