Like what you saw?
Create FREE Account and:
 Watch all FREE content in 21 subjects(388 videos for 23 hours)
 FREE advice on how to get better grades at school from an expert
 Attend and watch FREE live webinar on useful topics
PointSlope Form of Linear Equations  Concept
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
Sometimes we're only given a couple of points on a line and then asked to write a linear equation. When given this information, it's easiest to use point slope form. Point slope form can be written using one point and the slope or when given two points since we can calculate the slope from the two points. Once we have an equation in point slope form it can be rewritten in slopeintercept or standard form.
The same equation for a line can be written in lots of different ways. You guys are probably already familiar with the point slope formula, which is what we're going to look at here today. The point slope form of an equation of a line looks like "yy1=m(xx1)" where m is the slope and "x1, y1" is a point on the line.
These little subscripts, those little 1's are just to show that we're representing a point. It's different from the y value and the x value. These guys in your answer are going to stay as the letters x and y. These little ones with the subscripts are going to become numbers.
The point slope form is not terribly useful by itself. Most of the time it's used as a way to get to slope intercept form.
You'll see more what I am talking about once you start doing some examples. But keep in mind this is a great way to start especially if you're given a point and a slope, hence the name.
Please enter your name.
Are you sure you want to delete this comment?
Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
Thanks alot for such great lectures... I never found learning this easier ever before... keep up the great work.... :)”
You seem so kind, it's awesome. Easier to learn from people who seem to be rooting for ya!' thanks”
Get Peer Support on User Forum
Peer helping is a great way to learn. Join your peers to ask & answer questions and share ideas.
Sample Problems (9)
Need help with a problem?
Watch expert teachers solve similar problems.

PointSlope Form of Linear Equations
Problem 1 8,661 viewsWrite the equation of the line that has slope ⅔ and contains the point (6,1).

PointSlope Form of Linear Equations
Problem 2 7,641 viewsWrite the equation of the line that contains the points (4,3) and (8,3). Put your equation in slopeintercept form.

PointSlope Form of Linear Equations
Problem 3 258 views 
PointSlope Form of Linear Equations
Problem 4 223 views 
PointSlope Form of Linear Equations
Problem 5 211 views 
PointSlope Form of Linear Equations
Problem 6 223 views 
PointSlope Form of Linear Equations
Problem 7 189 views 
PointSlope Form of Linear Equations
Problem 8 217 views 
PointSlope Form of Linear Equations
Problem 9 208 views
Comments (0)
Please Sign in or Sign up to add your comment.
·
Delete