Inequalities Flashcards
6 cards from real Algebra Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Inequalities flashcards as text
Solve: 2x - 3 < 7
Answer: x < 5
Add 3 to both sides to get 2x < 10, then divide by 2 to get x < 5.
What is the solution to -x ≥ 3?
Answer: x ≤ -3
Multiply both sides by -1 and flip: x ≤ -3.
Solve the compound inequality: -1 < x + 2 < 5
Answer: -3 < x < 3
Subtract 2 from all three parts: -3 < x < 3.
Which graph shows x ≤ -2?
Answer: Closed circle at -2, shading left
x ≤ -2 uses a closed circle at -2 with shading to the left.
Solve: 4x + 1 ≥ 2x + 9
Answer: x ≥ 4
Subtract 2x to get 2x + 1 ≥ 9, subtract 1 to get 2x ≥ 8, divide to get x ≥ 4.
Which inequality represents 'x is between -3 and 6, exclusive'?
Answer: -3 < x < 6
'Exclusive' means the endpoints are not included, so strict inequalities are used.