Math Flashcards
7 cards from real CAHSEE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Math flashcards as text
A jacket originally costs $80 and is on sale for 25% off. What is the sale price?
Answer: $60
25% of $80 = $20 discount; $80 − $20 = $60 sale price.
Which of the following ordered pairs is a solution to the equation y = 3x − 1?
Answer: (2, 5)
When x = 2: y = 3(2) − 1 = 5, so (2, 5) satisfies the equation.
A right triangle has legs of length 6 and 8. What is the length of the hypotenuse?
Answer: 10
By the Pythagorean theorem: c = √(6² + 8²) = √(36 + 64) = √100 = 10.
Simplify: (2/3) ÷ (4/9)
Answer: 3/2
Dividing by a fraction means multiplying by its reciprocal: (2/3) × (9/4) = 18/12 = 3/2.
A linear function passes through (0, −2) and has slope 3. What is the equation of the line?
Answer: y = 3x − 2
Using slope-intercept form y = mx + b with m = 3 and b = −2: y = 3x − 2.
Which of the following represents a function?
Answer: {(2,3),(3,3),(4,3)}
In {(2,3),(3,3),(4,3)}, each x-value is unique, so it is a function.
Evaluate: 3² + 4 × 2 − 5
Answer: 12
Using order of operations: 3² = 9; 4 × 2 = 8; 9 + 8 − 5 = 12.