anonymous
  • anonymous
help poor little ole me please
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
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anonymous
  • anonymous
@mathmath333
anonymous
  • anonymous
ooh sorry i cant. i need help in something like that myself.... good luck!! :D

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anonymous
  • anonymous
thnx fam
anonymous
  • anonymous
:)
anonymous
  • anonymous
@abb0t @adrynicoleb
anonymous
  • anonymous
@JoannaBlackwelder
JoannaBlackwelder
  • JoannaBlackwelder
Can you graph the function?
anonymous
  • anonymous
nop
JoannaBlackwelder
  • JoannaBlackwelder
It is in the form y=mx+b. You should be able to do this if you are in precalc/calc.
anonymous
  • anonymous
i just started this nw semester
anonymous
  • anonymous
@JoannaBlackwelder
JoannaBlackwelder
  • JoannaBlackwelder
I'm not sure what you mean. Graphing a line is algebra I.
anonymous
  • anonymous
i havent taken algebra one at all they said ididnt have to its not required anymore
anonymous
  • anonymous
@JoannaBlackwelder
JoannaBlackwelder
  • JoannaBlackwelder
What?! And you are doing limits???? What class are you in?
anonymous
  • anonymous
pre calc lol
JoannaBlackwelder
  • JoannaBlackwelder
That's crazy! Ok, Let me explain how to graph a line first.
JoannaBlackwelder
  • JoannaBlackwelder
f(x)=mx+b is the same as y=mx+b
anonymous
  • anonymous
ok
JoannaBlackwelder
  • JoannaBlackwelder
m stands for the slope, and b stands for the y intercept
JoannaBlackwelder
  • JoannaBlackwelder
The y intercept is where the graph crosses the y axis.
JoannaBlackwelder
  • JoannaBlackwelder
|dw:1440701012955:dw|
JoannaBlackwelder
  • JoannaBlackwelder
|dw:1440701034052:dw| The y intercept is how we get our first point on the line.
JoannaBlackwelder
  • JoannaBlackwelder
Does that make sense so far?
anonymous
  • anonymous
yep
JoannaBlackwelder
  • JoannaBlackwelder
Ok, cool. Slope is rise/run
JoannaBlackwelder
  • JoannaBlackwelder
So, we need to write our slope as a fraction.
JoannaBlackwelder
  • JoannaBlackwelder
Any ideas on how to write 5 as a fraction?
anonymous
  • anonymous
1/5
JoannaBlackwelder
  • JoannaBlackwelder
Close, that is the reciprocal of 5. 5 as a fraction is 5/1. Good try!
JoannaBlackwelder
  • JoannaBlackwelder
So, that tells us that the "rise" is 5 and the "run" is 1
anonymous
  • anonymous
correct
JoannaBlackwelder
  • JoannaBlackwelder
So, we go up 5 units and right 1 unit
anonymous
  • anonymous
oh
JoannaBlackwelder
  • JoannaBlackwelder
Can you try to draw the next point on the graph?
JoannaBlackwelder
  • JoannaBlackwelder
Start at the point I drew.
JoannaBlackwelder
  • JoannaBlackwelder
And go up 5 and right 1
anonymous
  • anonymous
|dw:1440701437474:dw|
anonymous
  • anonymous
like that
JoannaBlackwelder
  • JoannaBlackwelder
What coordinate did you end up at?
anonymous
  • anonymous
??
JoannaBlackwelder
  • JoannaBlackwelder
When you go up 5 units from -3, we get to positive 2 for y, and right 1 unit from 0, we get to 1 for x.
JoannaBlackwelder
  • JoannaBlackwelder
|dw:1440701575209:dw|
anonymous
  • anonymous
ohh i messed mines up
JoannaBlackwelder
  • JoannaBlackwelder
It's cool. It is tricky the first time. :-)
JoannaBlackwelder
  • JoannaBlackwelder
|dw:1440701649251:dw| And through 2 points we can draw a line.
anonymous
  • anonymous
ok soo im so confused is this part of my answer or is this the other thing
JoannaBlackwelder
  • JoannaBlackwelder
This is the "Graph the function" step
anonymous
  • anonymous
ohh ok lol
JoannaBlackwelder
  • JoannaBlackwelder
So, to find the limit, we need to look at where the graph approaches x=5 from the right and the left/
JoannaBlackwelder
  • JoannaBlackwelder
We can't see that far on the graph I drew because it is too small.
JoannaBlackwelder
  • JoannaBlackwelder
Can you try drawing it out on paper and see what you get for y when x=5?
anonymous
  • anonymous
umm hw and thisis soo hard
JoannaBlackwelder
  • JoannaBlackwelder
It's not so bad. For this one you don't actually have to draw the graph.
JoannaBlackwelder
  • JoannaBlackwelder
Because linear equations are continuous.
JoannaBlackwelder
  • JoannaBlackwelder
That means that you can just plug in the x value into the formula and get what y is.
JoannaBlackwelder
  • JoannaBlackwelder
Can you try that?
anonymous
  • anonymous
sorry im just have little time cuz i have to do some remodeling tomy garage here soon
anonymous
  • anonymous
how do i plug it in
JoannaBlackwelder
  • JoannaBlackwelder
Substitute 5 in for x and simplify.
anonymous
  • anonymous
so is it y= to 15
JoannaBlackwelder
  • JoannaBlackwelder
No, y=5*5-3 Use the order of operations to simplify
JoannaBlackwelder
  • JoannaBlackwelder
Start at the top: Parentheses Exponents Multiplication Division Addition Subtraction
JoannaBlackwelder
  • JoannaBlackwelder
So multiplication comes before subtraction.
anonymous
  • anonymous
so y=22
JoannaBlackwelder
  • JoannaBlackwelder
Great! :-)
JoannaBlackwelder
  • JoannaBlackwelder
And for continuous functions (meaning no gaps in the graph) that is the limit.
anonymous
  • anonymous
are we done lol or is there more ?
JoannaBlackwelder
  • JoannaBlackwelder
That's it.
anonymous
  • anonymous
thank you bojangles thnx for ya help
JoannaBlackwelder
  • JoannaBlackwelder
You're welcome.

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