Another inequality question plz :)
Pic in comments!

Question

Another inequality question plz :)
Pic in comments!

anonymous · Answer

attachment

anonymous · Answer

the part i dont understand is the line

anonymous · Answer

and how it works

mathmale · Answer

Thank you for explaining clearly what you need to know.
You are given four answer choices.  My strong suggestion is that you solve each one for x.  This will take only a minute or two.  

Once you've done that, you'll likely see the connection to the given graph more easily.

anonymous · Answer

thanks but i already tried that and i still dont understand

mathmale · Answer

Solve y+5>-2.

show me your solution, please.

anonymous · Answer

so i have to solve for y right?

mathmale · Answer

yes.  You said you'd already done this.

anonymous · Answer

yes i tried understanding the graph by looking at the answer choices but i didnt really understand it

mathmale · Answer

You aren't doing what I asked.  I ask you to look at each of the four answer choices and solve each one for y.  Are you willing to do that?

anonymous · Answer

yes but i do not know how to solve for y that is also my problem

mathmale · Answer

You've said you'd "already done that."  Apparently you had not.  This costs us time.

If      y + 5 > -2, subtract 5 from both sides.

anonymous · Answer

|dw:1449897648432:dw|

mathmale · Answer

Good.
Now say in words what this symbolic relationship says.

anonymous · Answer

y is must be bigger than -7

mathmale · Answer

Very good.

now, look at the graph.  Can you find    y=-7?

mathmale · Answer

y+5>-2 is all in symbols and is therefore a "symbolic relationship."

anonymous · Answer

oh ok and 7 is the circled one

anonymous · Answer

so that would mean the answer is A
right?

mathmale · Answer

yes.  Now:       if we're talking about "greater than -7," do we circle -7 or do we put a dark dot on top of -7?

anonymous · Answer

i have no idea

anonymous · Answer

sorry

mathmale · Answer

Not equal to :     circle -7
Equal to              dark dot on top of -7

Now look at y=-7 again.    Would y=-3 be on the right side of y=-7 or on the left side?

anonymous · Answer

the right side

mathmale · Answer

Very good.

Now answer A has already been re-written as "y>-7."
Since we have the ">" symbol here, do we circle -7 or put a dark dot on top of -7?

anonymous · Answer

circle

mathmale · Answer

right.   and   " y > -7 " states that y is greater than -7.  So, starting at your circle, should we go right or left?

anonymous · Answer

Left because we are working with negatives

anonymous · Answer

right sorry

mathmale · Answer

No.  We're comparing SIZE.   if a number is greater than -7, it's on the RIGHT side of -7.

mathmale · Answer

17 is greater than 13, so 17 appears to the right of 13, correct?

anonymous · Answer

i said right look at the comment below

anonymous · Answer

yes

mathmale · Answer

Oh, I see.  Next time, write, "to the right."

anonymous · Answer

oh ok sorry my bad

mathmale · Answer

so, putting together what we know, that is, that this set does not include -7 and all numbers in the set are greater than -7, which of the four answer choices is the best one?

anonymous · Answer

A

mathmale · Answer

Right.  I know you chose A before, but I wanted you to know exactly why A is the correct choice.

anonymous · Answer

ok thanks again (sorry i wasted your time not being clear0

mathmale · Answer

Any questions about what we've done?

mathmale · Answer

You didn't waste my time; we learned to communicate, and you succeeded in solving the problem.  Nice working with you.

anonymous · Answer

thanks you too

mathmale · Answer

My pleasure.  See you.

anonymous · Answer

i have one more question with inequalities i will put it in a new thread it is like fraction things bye

mathmale · Answer

thanks for doing that; I appreciate it.  Helps keep things more orderly here.   See you!