1.12 Unit Test Systems Of Linear Equations And Inequalities
Question: What is the solution to the system of linear equations?
−8x−7y=96
−3x+5y=−25
Answer: (-5, -8)
Question: Yolanda is 4 years younger than 3 times her daughter’s age. The sum of their ages is greater than 88.
What is the youngest age Yolanda’s daughter can be?
Answer: 24
Question: What is the interval notation for the compound inequality?
x≤−4 or x≥5
Answer: (−∞, −4] or [5, ∞)
Question: Plot the inequality on the number line.
−6<x≤5
Choose the proper tool with the correct endpoints then click and drag the endpoints to the correct location.
Answer: open circle at -6, closed circle at 5
Question: Solve for x.
−3≤6x−9<39
Answer: 1≤x<8
Question: Solve for x.
7x−9<12 or 14x+8>11
Enter your answer, including the inequality symbol, in the boxes
Answer: x<3 or x>12
Question: Which graph represents the inequality?
−42x−6y>24
Answer: https://static.k12.com/nextgenmedia/assets/8080413-NGAL2SemA03UT06.png
Question: Enter an inequality that represents the graph in the box.
https://lh3.googleusercontent.com/xj8Z2aJXA2qEiJG9FL91OvqDv5vjsj_St1CdtvKKYMSr5xWwRGXUhNf8KwS088RA6Eld-A=s85
Answer: y≤3x-1
Question: Which graph represents the system of inequalities?
y−1≤4x, y+x>−4, y≤13x
Answer: https://static.k12.com/nextgenmedia/assets/8080418-NGAL2SemA03UT21.png
Question: Which graph represents the system of inequalities?
y+3x≥2, y+4≥12x
Answer: https://static.k12.com/nextgenmedia/assets/8080396-NGAL2SemA03UT28.png