Download presentation

Published byAriana Hutchinson Modified over 5 years ago

1
Warm-up Make a T-Table and graph the equation y = 2x + 2 x y -2 -2 -1 2 1 4 2 6

2
**Finding X and Y intercepts**

What is an intercept? y x 5 -5 Where the line crosses the y-axis. y-intercept = 3 (0, 3) (4, 0) x-intercept = 4 Where the line crosses the x-axis.

3
**In your notes: y-intercept = 3 x-intercept = 3 1.) (0, 3) (3, 0) y x**

5 -5 (0, 3) y-intercept = 3 (3, 0) x-intercept = 3

4
**In your notes: y-intercept = -4 x-intercept = -1 2.) (-1, 0) (0, -4) y**

5 -5 y-intercept = -4 (-1, 0) x-intercept = -1 (0, -4)

5
**X and Y Intercepts Plug in 0 for y – this is the x-intercept**

Plug in 0 for x – this is the y-intercept

6
Finding X intercepts x + y = 5 x + (0) = 5 y x 5 -5 x = 5 x = 5 (5, 0)

7
**Finding X intercepts x - 3y = 7 x - 3(0) = 7 x = 7 x = 7 (7, 0) y x -5**

8
**Finding X intercepts 6x + 12y = 36 6x + 12(0) = 36 6x = 36 6 6 x = 6**

5 -5 6x = 36 6 6 (6, 0) x = 6

9
**Finding Y intercepts y = -3x - 4 y = -3(0) - 4 y = -4 y = -4 (0, -4) y**

5 -5 y = -4 y = -4 (0, -4)

10
**Finding Y intercepts -3x + 6y = 18 -3(0) + 6y = 18 6y = 18 6 6 y = 3**

5 -5 6y = 18 (0, 3) 6 6 y = 3

11
**Finding Y intercepts y = ½ x + 6 y = ½ (0) + 6 y = 6 y = 6 (0, 6) y x**

5 -5 y = 6 y = 6

12
**Finding X and Y intercepts**

2x + 3y = 6 2x + 3(0) = 6 2x = 6 y x 5 -5 2 2 (0, 2) x = 3 (3, 0) 2x + 3y = 6 2(0) + 3y = 6 3y = 6 3 3 y = 2

13
**Finding X and Y intercepts**

4x + 8y = 16 4x + 8(0) = 16 4x = 16 y x 5 -5 4 4 (0, 2) x = 4 (4, 0) 4x + 8y = 16 4(0) + 8y = 16 8y = 16 8 8 y = 2

14
**Finding X and Y intercepts**

x - 2y = 4 x - 2(0) = 4 x = 4 y x 5 -5 x = 4 (4, 0) x - 2y = 4 (0) - 2y = 4 (0, -2) -2y = 4 -2 -2 y = -2

15
**Finding x and y intercepts**

Find the x-intercept of the line - 3x + 2y = 9 X-intercept MEANS y = 0

16
**Finding x and y intercepts**

Find the y-intercept of the line - 3x + 2y = 9 y-intercept MEANS x = 0

17
**Cover up method x = 4 y = 2 Solve for x and y. 2x + 4y = 8 2x + 4y = 8**

Hint: Cover up the 4y first. Hint: Cover up the 2x this time. Solve for x and y. 2x + 4y = 8 2x + 4y = 8 2x = 8 4y = 8 y x 5 -5 x = 4 y = 2

18
**Use the Cover Up Method - 6x – 4y = 2 -6x = 2 x = -1/3 6x – 4y = 2**

(-1/3, -1/2) y x 5 -5

Similar presentations

OK

Graphing Quadratic Equations a step-by-step guide with practice.

Graphing Quadratic Equations a step-by-step guide with practice.

© 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