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