Systems of Equations
-6x - 2y = -14
y = -2
(3, -2)
How many outcomes are possible if you flip 2 coins?
4
2x + 12 = 4x - 8
x=10
What is the slope of the line y = -3x + 6?
-3
What the number 0.0000000456 in scientific notation?
4.56 X 10-8
y=2x
-4x - 2y = -24
(3, 6)
A bag contains 3 red, 4 blue, 2 white, and 1 purple marble.
2 marbles are drawn at random.
You put each marble back in the bag after drawing. Find P(red, blue)
3/25
28 = -7(6a+2)
a = -1
What is the y-intercept of the line 2x + 5y = -10?
-2
Write the number 5,381,000,000 in scientific notation
3y - 2x =11
y + 2x = 9
(2, 5)
You roll 2 dice. What is the probability of rolling a sum of 5?
1/9
19 = 7 + 3(k+6)
k = -2
Put the following equation in slope-intercept form.
3x - 4y = 12
y = (3/4)x - 3
Simplify (x-4y6)/(x-8y4)
x4y2
3x + y = 13
x + 6y = -7
(5, -2)
In a standard deck of 52 cards, what is the probability of selecting a 7 and red card?
1/26
x + 6(1+5x) = 68
x = 2
What is the equation of a line with slope 5 through the point (3, 2)?
y = 5x - 13
(2v2)(4v2)2
32v6
x + 2y = 8
x - 2y = 4
(6, 1)
In a standard deck of 52 cards, what is the probability of selecting a black card or queen?
7/13
4(n - 3) = 2(2 - 2n) + 4n
n = 4
A line that is perpendicular to y = (3/4)x + 7 has what slope?
-4/3
(-3x3)3(-3x)2
-243x11