Algebra

Question 1

Quadratic Formula

Answer 1

x = -b ± √(b^2 - 4ac) / 2a

If ax^2 + bx + c = 0 but a ≠ 0

Question 2

Point-slope form

Answer 2

y - y1 = m(x - x1)

m is slope
y1 is a y coordinate
x1 is an x coordinate

Question 3

Slope intercept form

Answer 3

y = mx + b

m is slope
b is the y intercept