x- y = 2 2x +3y 9 Sx+y = 2 6. y = 8 2. (2x + y = 7 lx + 2y = 2 3 x + = 5 3x – 2y = -13 3. 1-6x +5y 28 7. 3 y = 1 (2x – 5y = -18 -x +y = -5 4. (3x + 4y = 19 8. 2x - y = 10 0.6х — 0.7у %3D- = -0.2 1-0.8x +0.4y 0.3

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter9: Systems Of Linear Equations
Section9.2: The Substitution Method
Problem 2WE
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Use the substitution, elimination and graphical methods to find the solution/s of the system of equations.
х— у%3D2
1:{2x + 3y = 9
1
x +y = 2
6.
2
X -
y = 8
2.
(2x + y = 7
lx + 2y = 2
x+y = 5
(x-y = 1
3
1
Зх — 2у 3D-13
7.
2
3
3.
1-6x +5y = 28
(-x +÷y = -5
2х — у %3D 10
{2x – 5y = -18
4.
(3x + 4y = 19
0.6х — 0.7у %3D -0.2
5.
(-0.8x + 0.4y = 0.3
Transcribed Image Text:Use the substitution, elimination and graphical methods to find the solution/s of the system of equations. х— у%3D2 1:{2x + 3y = 9 1 x +y = 2 6. 2 X - y = 8 2. (2x + y = 7 lx + 2y = 2 x+y = 5 (x-y = 1 3 1 Зх — 2у 3D-13 7. 2 3 3. 1-6x +5y = 28 (-x +÷y = -5 2х — у %3D 10 {2x – 5y = -18 4. (3x + 4y = 19 0.6х — 0.7у %3D -0.2 5. (-0.8x + 0.4y = 0.3
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