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Algebra & Functions Flashcards

7 cards from real SAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Algebra & Functions flashcards as text

  1. If x/3 + 2 = 6, what is x?

    Answer: 12

    Subtract 2 to get x/3 = 4, then multiply by 3 to get x = 12.

  2. What is the slope of a line perpendicular to y = 3x - 1?

    Answer: -1/3

    Perpendicular slopes are negative reciprocals, so -1/3.

  3. Factor completely: x^2 + 7x + 12.

    Answer: (x + 3)(x + 4)

    3 and 4 multiply to 12 and add to 7, giving (x + 3)(x + 4).

  4. If h(x) = 4 - x^2, what is the maximum value of h(x)?

    Answer: 4

    The maximum occurs at x = 0, giving h(0) = 4.

  5. Solve for x: 2x - 5 < 7.

    Answer: x < 6

    Add 5 then divide by 2: x < 6.

  6. If a sequence is 3, 7, 11, 15, ..., what is the 10th term?

    Answer: 39

    The common difference is 4, so the 10th term is 3 + 9(4) = 39.

  7. What is the value of (x + 2)^2 when x = 3?

    Answer: 25

    (3 + 2)^2 = 5^2 = 25.