Linear Equations

First Linear Equations give straight lines when plotted on any graph.
Here are the parts of a linear equation
y=mx+b
Y will be the answer you will soon recieve.
M is your slope
X is the variable that is placed there meaning you can put any number in that area.
B is the y-intercept. It never changes.


Lets get started with creating a linear equation by using a word problem.

First we know that to start off an equation we use y=.
Next we know that we have 75 dollars that will be our B or our y-intercept for that will never change.
Now 12 dollars is added each week. That is our slope or M.
X will stand for the number of weeks.
So lets put that together. Remember to start of with y=. Y=12x+75
This is our equation needed to find out how much money we will have in 10 weeks.
Now remember how I said you could plug any number in for x. Well lets try 10 since x does stand for the number of weeks and once again we are looking for the amount of money we will get at 10 weeks.
So lets plug it in y=12(10)+75 which is $195.00


SO REMEMBER IF AN EQUATION GIVES YOU THIS:

IT IS A LINEAR EQUATION

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