Studied by 66 people

4.0(1)

Get a hint

Hint

1

Slope of a Line

m = (y2-y1)/(x2-x1)

New cards

2

Slope-Intercept Form

y = mx+b

New cards

3

Point-Slope Form

y-y1 = m(x-x1)

New cards

4

Midpoint Formula

midpoint = (((x1+x2)/2), ((y1+y2)/2))

New cards

5

Distance Formula

distance = sqrt((x2-x1)²+(y2-y1)²)

New cards

6

Length of an Arc

length = (n/360)2pir

New cards

7

Area of a Sector

area = (n/360)pir²

New cards

8

Quadratic Formula

x = (-b±sqrt(b²-4ac))/2a

y = ax²+bx+c

New cards

9

SOHCAHTOA

Sin = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent

New cards

10

Probability

# of favorable outcomes/total number of outcomes

New cards

11

Circle Equation

(x-h)²+(y-k)²=r²

h = x coordinate of the middle of the circle

k = y coordinate of the middle of the circle

New cards

12

Exponential Growth

y = a(1+r)^t

a = initial value

r = rate

t = time

New cards

13

Vertex of a Parabola

x = -b/2a

“banana” in the quadratic formula

New cards

14

Vertex Form

a(x-h)²+k

vertex = (h, k)

New cards

15

Pythagorean Theorem

a²+b² = c²

New cards

16

Distance = Rate x Time

d = rt

New cards

17

Sine & Cosine

sin(x) = cos(90-x)

New cards

18

Discriminant

b²-4ac

b²-4ac < 0 | no real solutions

b²-4ac = 0 | 1 real solution

b²-4ac > 0 | 2 real solutions

New cards

19

Pythagorean Triples

3, 4, 5

5, 12, 13

7, 24, 25

8, 15, 17

can be multiples of any of these too

New cards

20

Perpendicular Slope

opposite reciprocal

neg → pos or pos → neg, then swap numerator/denominator

New cards

21

Sum of Angles

sum = (n-2)180

n = number of sides

New cards