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Graphing Lines using Intercepts - Concept
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We use many different techniques to graph lines, but one of the most efficient and straightforward, when given the equation of the line, is **graphing lines using intercepts**. If we are not given a table of values, the easiest two points to find are usually the x- and y-intercepts. Graphing lines using intercepts is not the only method, we can also graph using the slope and the y-intercept.

Whenever you're asked to graph a line,

you have a choice of what method

you want to use.

Some people like to graph lines

by making an X-Y table.

That's where you choose X values, substitute

them in one by one and find the

corresponding Y values.

Use those as points and connect them.

Another method you guys might like to

use is the slope intercept method.

That's where you put your equation

into Y equals MX plus B form.

Your first doc was at B that's

at the Y intercept.

From there you count your slope and make

another point and you connect them.

Be sure to use a ruler.

The method I really want you guys to practice

a little bit more and what you're

going to see in your homework is this

method 3. Finding and connecting

the X and Y intercepts.

The way to find X intercept is to substitute

Y equals 0. The way to find

the Y intercept is to substitute in

X equals 0. It doesn't matter

what form the equation is in when

you start doing that process.

What you're going to end up with is two

different points on the two different

axes and all you need to do

is connect them using a ruler.

So if you guys get used to using all three

of these methods you'll get better

at being able to tell which method

is the best and the most efficient

for any given problem.

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