mini review. y= x + 1 y = -x + 3 the solution is (1, 2)
TRANSCRIPT
![Page 1: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/1.jpg)
Ch. 3Mini Review
![Page 2: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/2.jpg)
Graph the linear system and tell how many solutions it has. If there is exactly one solution, estimate the solution and check it algebraically.
y= x + 1y = -x + 3
![Page 3: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/3.jpg)
The solution is(1, 2)
![Page 4: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/4.jpg)
Graph the linear system and tell how many solutions it has. If there is
exactly one solution, estimate the solution and check it algebraically.
X + 2y = -2-3x -6y = 6
![Page 5: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/5.jpg)
There are infinitely many solutions
![Page 6: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/6.jpg)
Solve the Systemx + y = 2
y = 2x + 5
![Page 7: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/7.jpg)
(-1, 3)
![Page 8: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/8.jpg)
Solve the System
y – 2x = -5y – x = -3
![Page 9: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/9.jpg)
(2, -1)
![Page 10: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/10.jpg)
Solve the System
2x – y = -82x + y = 4
![Page 11: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/11.jpg)
(-1, 6)
![Page 12: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/12.jpg)
Solve the System
x + 4y + z = 12
y – 3z = -7z = 3
![Page 13: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/13.jpg)
(1, 2, 3)
![Page 14: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/14.jpg)
Solve the System
x + y + 2z = 5
x + 2y + z = 8
2x + 3y – z = 1
![Page 15: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/15.jpg)
(-7, 6, 3)
![Page 16: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/16.jpg)
Solve the System
2x – y = 95x + 2y =
27
![Page 17: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/17.jpg)
(5, 1)
![Page 18: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/18.jpg)
Solve the System
3x + 5y = 84x + 7z = 18
y + z = 3
![Page 19: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/19.jpg)
(1, 1, 2)
![Page 20: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/20.jpg)
Graph the system of linear inequalities
y ≤ 2x > 3
![Page 21: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/21.jpg)
![Page 22: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/22.jpg)
Graph the system of linear inequalities
x ≥ 0y ≥ 0
2x + y ≤ 4
![Page 23: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/23.jpg)
![Page 24: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/24.jpg)
Earning money You work at a grocery store. Your hourly wage is greater after 6:00 p.m. than it is during the day. One week you work 20 daytime hours and 20 evening hours
and earn $280. Another week you work 30 day time hours and 12 evening
hours and earn a total of $276. What is your daytime rate? What is your
evening rate?
![Page 25: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/25.jpg)
daytime = $6 evening = $8
![Page 26: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/26.jpg)
Telethon During a recent telethon,
people pledged $25 or $50. Twice as many people pledged $25 as $50. Altogether, $18,000 was pledged. How many people
pledged $25?
![Page 27: Mini Review. y= x + 1 y = -x + 3 The solution is (1, 2)](https://reader036.vdocument.in/reader036/viewer/2022062518/5697bf7a1a28abf838c8310b/html5/thumbnails/27.jpg)
360