Math Formulas for SAT

distance formula

midpoint formula

equation of a line

y=mx+b

slope formula

pythagorean theorem

a²+b²=c²

quadratic formula

discriminant

compound interest

the result of reinvesting or retaining interest that would otherwise be paid out, or of the accumulation of debts from a borrower.

simple interest

Prt —> P=beginning balance, r=interest rate (usually per year), t=number of time periods (generally one-year time periods)

equation of a circle

(x-a)^2 + (y-b)^2 = r^2