GLA 10 cheat sheet
GLA 10 · Keep the key ideas within reach.
General Grade 10 Reference - Unverified Domain
Mean = (sum of all values) ÷ (number of values); median = middle value of an ordered list; mode = most frequent value.
Probability of independent events A and B both occurring = P(A) × P(B).
Slope = (y₂ − y₁) ÷ (x₂ − x₁); a horizontal line has slope 0, and a vertical line has undefined slope.
Pythagorean theorem: a² + b² = c², where c is the hypotenuse of a right triangle.
Quadratic formula: x = [−b ± √(b² − 4ac)] ÷ (2a) for ax² + bx + c = 0.
A source is primary if it is a firsthand record from the event; it is secondary if it interprets or analyzes primary sources.
Correlation describes variables changing together; causation requires evidence that one variable directly produces change in the other.
In an argument, a claim needs textual evidence and reasoning; an unsupported assertion is not proof.
Natural selection requires inherited variation, differential survival or reproduction, and transmission of advantageous traits.