Algebraic Reasoning and Functions Flashcards
7 cards from real TSI practice questions. Tap to flip, then mark Knew It or Still Learning β missed cards come back until you master them.
Read the first 7 Algebraic Reasoning and Functions flashcards as text
Solve: x^2 - 5x + 6 = 0.
Answer: x = 2 or x = 3
Factors as (x - 2)(x - 3) = 0, so x = 2 or x = 3.
What is the equation of a line with slope 3 passing through (0, -4)?
Answer: y = 3x - 4
Slope 3 and y-intercept -4 give y = 3x - 4.
Evaluate: 2^3 + 3 * 4 - 6.
Answer: 14
8 + 12 - 6 = 14 by order of operations.
If the perimeter of a rectangle is 2L + 2W, solve for W.
Answer: W = (P - 2L)/2
Subtract 2L then divide by 2: W = (P - 2L)/2.
Simplify the expression: (x^2 - x - 12)/(x - 4).
Answer: x + 3
Factor numerator to (x - 4)(x + 3), cancel (x - 4) to get x + 3.
A function doubles its input and adds 5. What is the output for input 6?
Answer: 17
2(6) + 5 = 12 + 5 = 17.
Solve for y: 2y/3 = 8.
Answer: y = 12
Multiply both sides by 3/2: y = 12.