CSU Math Placement Exam Questions and Answers

CSU Math Placement Exam Questions
and Answers
slope-intercept form - Answer -y = mx + b

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