Download presentation

Presentation is loading. Please wait.

Published byJade Gouldin Modified over 3 years ago

2
08/10/20141 Linear Graphs Learning Intention: by the end of the lesson, students should be able to: generate coordinate pairs that satisfy a simple linear rule plot the graphs from an equation E.g.: y = 2x Success Criteria: students will know they can do this when their coordinate pairs derived from an equation produce a straight line Keywords: substitute, intercept, gradient, origin, parallel

3
08/10/2014Presented By J. Mills-Dadson2 Linear Graphs Linear graphs are ______ lines straight The rule connecting x and y coordinates is of the form y = mx + c ‘m’ is the gradient : how flat or how steep the graph should be ‘c’ is the intercept: where the graph crosses the y-axis The meeting points of the x - axis and y – axis is called the origin

4
08/10/2014Presented By J. Mills-Dadson3 Linear Graphs x 0123 y 1) Let us start with simple rule, y = x 0 123 x 0123 y 2) Now let’s y = x + 2 2 34 5 x 0123 y Now let’s y = 2x + 2 2 46 8 Let’s plot the coordinates of the first two rules on one grid. Join the points to draw the graph y = x y = x + 2 What can you say about the slope and where the cross the y – axis?

5
08/10/2014Presented By J. Mills-Dadson4 Linear Graphs x 0123 y 2) Now let’s y = x + 2 2 345 x 0123 y Now let’s y = 2x + 2 2 468 Let’s plot the coordinates of the These two rules on one grid. Join the points to draw the graph y = x + 2 What can you say about the slope and where the cross the y – axis? y = x + 2

6
08/10/2014Presented By J. Mills-Dadson5 What is the mathematical keyword used to describe the slope (flatness and steepness) of a linear graph? A originB intercept D x-axis 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C gradient Plenary C gradient

7
08/10/2014Presented By J. Mills-Dadson6 Linear graphs are : A straight lines B circles D none of the above 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C curves Plenary A straight lines 100,000

8
08/10/2014Presented By J. Mills-Dadson7 Look at y = 3x + 1. What is the value of the gradient? A 1B 4 D 3 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C 2 Plenary D 3 200,000

9
08/10/2014Presented By J. Mills-Dadson8 What is the mathematical keyword used to describe where a linear graph crosses the y-axis? A parallelB intercept D x-axis 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C gradient Plenary B intercept 300,000

10
08/10/2014Presented By J. Mills-Dadson9 Which pair of linear graphs have the same gradient (slope)? A y = 2x + 1 & y = 3x + 1 B y = 3x +2 & y = 3x +3 D all of the above 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C y = x - 2 & y = 2x + 5 Plenary B y = 3x + 2 & y = 3x +3 400,000

11
08/10/2014Presented By J. Mills-Dadson10 Look at y =x + 1. When x is 3, what would y be? A 4B 1 2 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C 3 Plenary A 4 500,000

12
08/10/2014Presented By J. Mills-Dadson11 What is the name of the point where the x-axis and the y axis meet? A originB intercept D parallel 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C slope Plenary A origin 600,000

13
08/10/2014Presented By J. Mills-Dadson12 When linear graphs cross the y - axis at different points, we say the graphs have the different……… A originsB intercepts D lengths 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C gradients Plenary B intercepts 700,000

14
08/10/2014Presented By J. Mills-Dadson13 Look at y = 2x + 2. If x is 7, what would y be? A 2B 7 D 16 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C 14 Plenary C 16 800,000

15
08/10/2014Presented By J. Mills-Dadson14 When a linear graph slopes downwards from left to right, it means the gradient is………. A 0B positive D none of the above 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C negative Plenary C negative 900,000

16
08/10/2014Presented By J. Mills-Dadson15 Look at y = -2x – 2. If x is 10, what would y be? A -10B -2 D -22 1,000,000 900,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 C -18 Plenary C -22 1,000,000

17
Today’s Class Work Exercise 3A – Plotting Straight Line Graphs Q1 adgj Q2aei Q3 all Q4 Q5 Book check: 2A Linear equations 2B Worded problems 2C Substitution and transposing Redemption work: 4B Correlation coefficient 4C Two mean method 08/10/201416

Similar presentations

OK

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on artificial intelligence in power station Ppt online compressor map Ppt on networking related topics to accounting Ppt on intelligent manufacturing pdf Ppt on water cycle for class 4 Elements of one act play ppt on apple A ppt on taj mahal Ppt on indian space program Upload and view ppt online student Ppt online viewer