solving for a variable
2x+3=9
x=3
2x+3=9 subtract 3 from both sides
2x=6 divide 2 from both sides
x=3
What is the slope of the line below?
(y - 4) = 2 (x + 3)
slope= 2
(y - y1) = m (x - x1)
is the value that appears most often in a set of data
mode
State the likeliness of the event to occur:
Impossible, unlikely, equally likely, likely, certain
~A triangle will have 3 sides.
certain
Find the mode of the numbers:
26, 52, 52, 78, 12, 26, 61, 32, 26
26
16=4x
x=4
Find the midpoint of the 2 points:
(4, 8) and (10, 3)
(7, 5.5)
4+10=14/2=7
8+3=11/2=5.5
Lines in the same plane that never intersect
parallel lines
State the likeliness of the event to occur:
Impossible, unlikely, equally likely, likely, certain
~Tomorrow it will rain.
equally likely
Find the median of the numbers:
1, 44, 5, 3, 33, 3, 8, 9
6.5
5x-3=2
x=1
write in slope intercept form:
2x+y=3
y=-2x+3
An angle whose measure is more than 90° but less than 180°
obtuse angle
If I tossed 2 coins at the same time, what is the probability that they both land on tails?
1 out of 4, or 1/4
Find the median of the numbers:
25, 48, 12, 12, 3, 7, 68, 4
12
2x+2=10-2x
x=2
what is the y intercept of the equation:
4y=16x+8
y intercept is 2
divide both sides by 4
y=4x+2
the half way point of 2 points
midpoint
I rolled a 6 sided dice, what is the probability that I rolled an even number?
3/6 or 1/2
Find the range of the numbers:
47, 98, 121, 65, 47, 52, 45
76
8x+2x-5=45
x=5
What is the distance between the 2 points?
(3, 2) and (8, 2)
5
the likelihood of something happening or being the case
probability
One card is drawn from a deck of 52 cards, if I picked 1 card at random, what is the probability that I will pick a red 2?
there are 4 suits of cards (2 red and 2 black), each suit has cards from 2 to A
if I picked a red 2, this mean I have a chance to pick 2 red 2's out of the entire deck of 52 cards
Find the mean of the numbers:
15, 6.1, 3.7, 2.2, 11, 14, 4
8