8x
What is the value of x?
30 + x = 38
x=8
What is the slope of the equation?
y = -3x + 8
The slope is -3.
Is it a function?
(-3,5), (0,5), (3,5), (6,5)
YES
A negative # times a positive # equals a positive #.
False
Simplify 10x - 3x + 7y
7x +7y
5x + 1 = 31
x=6
What is the y-intercept of the equation?
y = -1/4x + 7
They y-intercept is 7.
What is the domain of the function?
(2,5), (5,10), (8,15), (11,20)
2, 5, 8, 11
Which point is a solution? A.(4, -1) B. (-1, 4)
A
Simplify.
8m - m + 6m -10p + 6
13m - 10p + 6
-5x + 2 = 22
x = -4
Which equation has a slope of -4/5?
A. y = 4/5x + 7
B. y = -4/5x + 7
B
What is the range of the function?
3, 5, 7, 9, 11
Which is the compound inequality for the graph?
A. x>5 and x<9 B. x<5 and x>9
A
5r + 6s - s + 2r - 15
7r + 5s - 15
100 = 9x + 19
x = 9
What is the y-intercept of the equation y = 3x - 6 ?
A. (0,3)
B. (0,-6)
B
Is it a function?
Yes--it passes the vertical line test.
Is this an arithmetic sequence?
2, 6, 18, 64
No, because it's multiplying by a common ratio (geometric sequence) instead of adding/subtracting by a common number.
4(s +3) - 12
4s
5(x+2) = 50
x=8
Which equation has a slope of 2/3 and y-int of -8?
A. y= -2/3x - 8 B. y= 2/3x + 8
C. y= 2/3x - 8
C
Will this equation result in a function?
𝑦 = |𝑥 + 3|
Yes, because absolute value equations make a V-shape, which passes the vertical line test!
What is the percent of increase?
45 to 180
180-45 = 135/45 = 3 = 300%