Download presentation

Presentation is loading. Please wait.

Published byRosamund Joseph Modified over 6 years ago

1
3x – 5y = 11 x = 3y + 1 Do Now

2
Homework Solutions 2)2x – 2y = – 6 y = – 2x 2x – 2(– 2x) = – 6 2x + 4x = – 6 6x = – 6 x = – 1y = – 2x y = – 2(– 1) y = 2 Solution:(– 1,2)

3
Homework Solutions 8)2x + 3y = 13 y = 2x – 1 2x + 3(2x – 1) = 13 2x + 6x – 3 = 13 8x – 3 = 13 8x = 16 x = 2y = 2x – 1 y = 2(2) – 1 y = 3 Solution:(2,3)

4
Homework Solutions 10)3x – 2y = 9 y = 3 – x 3x – 2(3 – x) = 9 3x – 6 + 2x = 9 5x – 6 = 9 5x = 15 x = 3y = 3 – x y = 3 – (3) y = 0 Solution:(3,0)

5
y = – 2x + 4 x – 5y = 2

6
3x – 2y = 8 x = –5y – 3

7
6x – 2y = – 4 y = 3x + 2

8
Elimination vs. Substitution Use the type of equations you are given to help you determine which method is the better way to solve the system. Elimination is best when neither equation is solved for a variable. Substitution is best when one equation is solved for a variable.

9
Which method is best? 1)y = 5x 2x + 3y = 34 2) c – 5d = 2 2c + d = 4 3)2x + 3y = 13 5x – 2y = 5 4)7x – 2y = 5 x = 3y – 2

11
x + 5y = – 3 3x – 2y = 8

12
c = 5d + 2 2c + d = 4

Similar presentations

© 2021 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