Page 500 - Algebra 1

18. Error Analysis Two students are analyzing the data in the table and
(71) have drawn different conclusions. Which student is correct? Explain the error.
x
4
1
3
6
2
5
y
12
2
9
21
7
15
Student A
There is no correlation among the data because there is no constant increase or decrease in the data.
Student B
There is a positive correlation among the data because
both sets of data values increase.
19. Chemistry The table shows atomic numbers and atomic mass for the first
(71) 10 elements of the periodic table of the elements. Make a scatter plot using the
data values.
20. Which inequality is the solution of -_n < 36 ?
Atomic Symbol
H
He
Li
Be
B
C
N
O
F
Ne
Atomic Number
1
2
3
4
5
6
7
8
9
10
Atomic Weight
1.01
4.003
6.94
9.01
10.81
12.01
14.01
15.999
18.998
20.18
(70)
12
C n < 432 D n > 432 (70) steps are similar? What parts are different?
-2t = 4 -2t > 4
22. Marketing Fourdifferentcollectiblecardsarebeingofferedinsideacerealbox.The (68) probabilities of choosing a box with a given card are as follows: Card #1 (1 in 4),
Card #2 (1 in 10), Card #3 (1 in 20), and Card #4 (6 in 10). If a box is chosen at random, what is the probability of getting either Card #3 or Card #4?
23. Probability In some games, a single regular solid with 20 sides, labeled from 1 to 20, (68) is used instead of a dot cube. What is the probability of rolling either a multiple of
2 or a multiple of 3 with a 20-sided solid?
24. Multi-Step Draw a coordinate grid, and number it from -6 to +6 along the x- and (65) y-axis. Will a line that passes through the points (-5, 1) and (-2, 4) be
perpendicular to the line that passes through the points (-2, 2) and (2, -2)? a. Model Line 1 passes through the points (-5, 1) and (-2, 4) and Line 2
passes through the points (-2, 2) and (2, -2). Graph the lines. b. Write an equation for both lines.
c. Justify Are the lines perpendicular? Explain.
A n < -432 B n > -432
21. Analyze Consider the equation and inequality below. What parts of the solution
Lesson 73 485