CSU MATH PLACEMENT WITH COMPLETE
SOLUTIONS 100% 2023/2024
slope-intercept form
y = mx + b
slope formula
m = (y₂- y₁) / (x₂- x₁)
point slope form
y - y₁ = m(x - x₁)
standard form
Ax + By = C
distance formula
d = √[( x₂ - x₁)² + (y₂ - y₁)²]
equation of a circle
(x - h)² + (y - k)² = r²
where (h,k) is the center and r is the radius
absolute value piece wise function
|x| = { x if x >or= 0
{ -x if x < 0
FOIL
First, Outer, Inner, Last
what does i equal?
square root of -1
i^2
-1
i^3
-i
i^4
1
quadratic formula
x = -b ± √(b² - 4ac)/2a
SOLUTIONS 100% 2023/2024
slope-intercept form
y = mx + b
slope formula
m = (y₂- y₁) / (x₂- x₁)
point slope form
y - y₁ = m(x - x₁)
standard form
Ax + By = C
distance formula
d = √[( x₂ - x₁)² + (y₂ - y₁)²]
equation of a circle
(x - h)² + (y - k)² = r²
where (h,k) is the center and r is the radius
absolute value piece wise function
|x| = { x if x >or= 0
{ -x if x < 0
FOIL
First, Outer, Inner, Last
what does i equal?
square root of -1
i^2
-1
i^3
-i
i^4
1
quadratic formula
x = -b ± √(b² - 4ac)/2a
