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120_ch_9.7_notes

# 120_ch_9.7_notes - Mat120 Chapter 9 Section 7 Page 15...

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Unformatted text preview: / Mat120 Chapter 9 - Section 7 Page 15 Systems of Equations and Inequalities Determine whether the given order pair is a solution to the system: x:-3 3:! Textbook Exercises: 2. (-3, 1) x . y = -4 2x + 10y = 4 a __ ~ </ w‘ ‘ ‘7‘ -‘ (-3)+/ocx> =‘/ g” ,4 / ,c 7140:4- 2- C-l Three types of solutions: WM mum TWBW Number: 1 'Number: 00 Number:[email protected]"_¢§’ Three Solution Methods: 1. Graphical 2. Substitution 3. Addition Method 1 - Graphical -- Solve the system graphically 6. x-y=-4 x+ = y x+g=¢ X—jzd4 X \l X N I 5' 0 “f 5‘ ' «l 0 Mat120 Method 2: Substitution Method 12. x+y=10 y=4x x 1(- y 10 x+£9x):10 .5X7/0 Xﬁc; g¢4x LLMiJ (2/?) cg+ys l0 / ga‘I‘OJ/ F. —- Chapter _ 9 - Secti 7 Graphing Linear Equations, Linear Fuwand Absolute Value Functions Page 16 x_3y=3 :7 x: 3x+5y=-l9 3u3+5y=*I9 34. 3(551-6 )+S‘y r: 4? -—[email protected]==:3P/ 3 (-3) +56%) 7:- —/ﬁ H?%~MC/AZ// Mat120 Chapter 9 — Section 7 Page 17 Systems of Equations and Inequalities Method 3: Addition Method 20. 2x+y=3 X - y=3 k2; 28.‘l‘(2x-3y=2 3 (5x+4y= 51 9404; :9 /5)<+I =55 M‘s“; (w) s; /‘ [4’53 /5t,32~0)2 3/4 W 2(7)-5W;9~ 5(7)+’+(</) «Fl 19 55’! ...
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