CSU Math Placement Exam Questions With 100% Correct Answers 2024

slope formula - ANSWER -m = (y₂- y₁) / (x₂- x₁) point slope form - ANSWER -y - y₁ = m(x - x₁) standard form - ANSWER -Ax + By = C distance formula - ANSWER -d = √[( x₂ - x₁)² + (y₂ - y₁)²] equation of a circle - ANSWER -(x - h)² + (y - k)² = r² where (h,k) is the center and r is the radius absolute value piece wise function - ANSWER -|x| = { x if x >or= 0 { -x if x < 0 FOIL - ANSWER -First, Outer, Inner, Last what does i equal? - ANSWER -square root of -1 i^2 - ANSWER -- 1 i^3 - ANSWER -- i i^4 - ANSWER -1 quadratic formula - ANSWER -x = -b ± √(b² - 4ac)/2a vertex form - ANSWER -y = a(x - h)² + k vertex - ANSWER -(-b/2a , -b² - 4ac/4a) basic laws for working w/ exponents - ANSWER -i) (A^N)(A^M) = A^N+M ii) (A^N)^M = A^NM iii) (AB)^N = (A^N)(B^N) iv) A^0 = 1 v) A^-N = 1/A^N vi)(A/B)^N = (A^N) / (B^N) rational exponents and radicals - ANSWER -^n√a = a^(1/n)