Download presentation

1
**Starter Activity: Guess the Rule**

y = mx + c Starter Activity: Guess the Rule x y x y 2 -2 1 4 1 1 2 6 2 4 3 8 3 7 -4 6 -4 -14 y = 2x + 2 y = 2x + 1

2
**Starter Activity: Guess the Rule**

y = mx + c Starter Activity: Guess the Rule x y x y 3 33 2 10 4 43 4 18 5 53 6 26 6 63 8 34 -4 -37 -4 -14 y = 10x + 3 y = 4x + 2

3
**Starter Activity: Guess the Rule**

y = mx + c Starter Activity: Guess the Rule x y x y 20 96 2 21 101 1 22 106 2 -2 23 111 3 -4 -4 24 -4 10 y = 5x - 4 y = -2x + 2

4
**OBJECTIVE: By the end of the lesson you should…**

…be able to … … find the equation for any linear graph from the diagram (All pupils) … find the equation of any line given any two points on the line (Most pupils) … use these skills to interpret real life problems (Some pupils)

5
**Straight Line Graphs (y = mx + c)**

1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c ch y = 2 ch x = 1 y = 2x + 3 y intercept = 3 The gradient is defined as the Change in y Change in x

6
**Straight Line Graphs (y = mx + c)**

1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c ch y = 3 y = 3x - 4 ch x = 1 The gradient is defined as the Change in y Change in x y intercept = -4

7
**Straight Line Graphs (y = mx + c)**

1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c y = ½x + 1 ch y = 1 ch x = 2 y intercept = 1 The gradient is defined as the Change in y Change in x

8
**Straight Line Graphs (y = mx + c)**

1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c The gradient is defined as the Change in y Change in x ch y = 1 ch x = 3 y intercept = -5

9
**Straight Line Graphs (y = mx + c)**

1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c ch y = 3 ch x = 4 y intercept = 2 The gradient is defined as the Change in y Change in x

10
**Straight Line Graphs (y = mx + c)**

1 2 3 4 5 6 7 8 9 10 -9 -8 -7 -6 -5 -4 -3 -2 -1 -10 x y Straight Line Graphs (y = mx + c) m gives the gradient of the line and c gives the y intercept. All straight line graphs are of the form y = mx + c y intercept = 3 ch y = 4 ch x = 5 The gradient is defined as the Change in y Change in x

11
**Key Questions: Find the formulae for these Real Life Problems**

(1) A taxi firm has a formula for working out fares It is in the form P=mN + c P=Price N = No. miles A 0 mile journey costs £2 A 2 miles journey costs £6 (2) A taxi firm has a formula for working out fares It is in the form P=mN + c P=Price N = No. cards 60 cards cost £ cards cost £255 Hint: If it helps then quickly sketch the graphs with N going across and P going up

12
**OBJECTIVE: Have you met your lesson objectives?**

Are you able to … … find the equation for any linear graph from the diagram (All pupils) … find the equation of any line given any two points on the line (Most pupils) … use these skills to interpret real life problems (Some pupils)

Similar presentations

Presentation is loading. Please wait....

OK

The x- and y-Intercepts

The x- and y-Intercepts

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google