Mon Sep 19th – Finding the equation of a line from two coordinates, finding a line parallel to another line given a coordinate on the new line.

LEARNING OBJECTIVE: Use the skills in gradient, intercepts to find the equation of lines, including parallel lines, from given coordinates

SUCCESS CRITERIA: You will be able to:

1. Find the equation of a line from two given coordinates
   
2. Find the equation of a parallel line given the equation of the line and a coordinate on the new line
   

STARTER:

1. If the point (2,5) is on the line y = 2x + c, what is the value of c
   
2. If the point (-1,3) is on the line y = 3x + c what is the value of c
   
3. If the point (4,5) is on the line x + y =c what is the value of c
   
4. What is the equation of the line that passes through these two points (2,7) and 5,13)
   

LESSON: Use answers to above starter to generate discussion on how to solve problems like question 4.

Work through Questions 2 to 5 from these questions pages 64/65 Unit 2 Higher text Book)

PLENARY: Checking answers with students around class.

What is the equation of the line parallel to y = 3x + 4, that passes through the point (2,8)

Try the rest of the questions

PLENARY: Checking Answers.

Chapter Checklist for Five Finger Feedback

Level D		Draw the graph of a line, such as y = 3x – 5 without being given a table of values Solve problems such as finding where the line y = 3x – 5 crosses the line y = 4
Level C		Find the gradient of straight line graphs Find the midpoint of a line segment such as (1,5) and (3,7)
Level B		Find the gradient and equation of a line through two points such as (0,3) and (5,13) Find the equation of a line parallel to another line, such as y = 3x – 5, passing through a given point.