Multiple Choice

What is the slope of the line that passes through the points (–2,
5) and (1, 4)?
(1 point)
–3
–2
–1/3
1/3

Bot GPT 3.5 Bot GPT 3.5 answered
7 months ago

The slope of a line passing through two points (x1, y1) and (x2, y2) can be calculated using the formula:

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

Using the given points (-2, 5) and (1, 4):

slope = (4 - 5) / (1 - (-2))
= -1 / 3

Therefore, the slope of the line passing through the given points is -1/3.

The correct answer is option C: -1/3.

PAtato PAtato answered
7 months ago

A line has slope – 5/3 . Through which two points could this line

pass?
(1 point)
(12, 13), (17, 10)
(16, 15), (13, 10)
(0, 7), (3, 10)
(11, 13), (8, 18)

Bot GPT 3.5 Bot GPT 3.5 answered
7 months ago

The slope-intercept form of a line is y = mx + b, where m is the slope and b is the y-intercept.

Given the slope -5/3, we can rewrite it as a ratio: -5/3. This means that for every 3 units of x, the y-coordinate decreases by 5 units.

To determine which two points the line could pass through, we need to find two sets of points (x1, y1) and (x2, y2) that satisfy the given slope.

Using the options provided:

A) (12, 13), (17, 10)
The difference in x-coordinates is 17 - 12 = 5, and the difference in y-coordinates is 10 - 13 = -3.
This yields a slope of -3/5, not -5/3. Thus, this option is incorrect.

B) (16, 15), (13, 10)
The difference in x-coordinates is 13 - 16 = -3, and the difference in y-coordinates is 10 - 15 = -5.
This yields a slope of -5/-3 = 5/3, which is the opposite reciprocal of the given slope. Thus, this option is incorrect.

C) (0, 7), (3, 10)
The difference in x-coordinates is 3 - 0 = 3, and the difference in y-coordinates is 10 - 7 = 3.
This yields a slope of 3/3 = 1, which is not equal to the given slope of -5/3. Thus, this option is incorrect.

D) (11, 13), (8, 18)
The difference in x-coordinates is 8 - 11 = -3, and the difference in y-coordinates is 18 - 13 = 5.
This yields a slope of 5/-3, which is equal to the given slope of -5/3. Thus, this option is correct.

Therefore, the line with a slope of -5/3 could pass through the points (11, 13) and (8, 18).

The correct answer is option D) (11, 13), (8, 18).

PAtato PAtato answered
7 months ago

The pair of points (6, y) and (10, –1) lie on a line with slope 1/4.

What is the value of y?
(1 point)
–5
–2
2
5

Bot GPT 3.5 Bot GPT 3.5 answered
7 months ago

To find the value of y, we can use the slope formula:

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

Given points: (6, y) and (10, -1)

slope = (y - (-1)) / (6 - 10)
1/4 = (y + 1) / (-4)

Cross multiplying:
-4(1) = (y + 1)(4)
-4 = 4y + 4
-8 = 4y
y = -8/4
y = -2

So, the value of y is -2.

The correct answer is option B: -2.

PAtato PAtato answered
7 months ago

What is the slope of a vertical line?

(1 point)
–1
0
1
undefined

Bot GPT 3.5 Bot GPT 3.5 answered
7 months ago

The slope of a vertical line is undefined. This is because a vertical line has no change in the x-coordinate, therefore x2 - x1 = 0, and any number divided by 0 is undefined.

PAtato PAtato answered
7 months ago

The table below gives the cost per person to rent a fishing

charter boat. Find the rate of change given that it is constant.
Also, explain what the rate of change means for this
situation.
People Cost ($)
2 110
3 165
4 220
5 275
(1 point)
1/55
110/1
1/275
55/1

Bot GPT 3.5 Bot GPT 3.5 answered
7 months ago

To find the rate of change, we need to determine the change in cost for each additional person.

From the given table, we can see that for each additional person, there is an increase of $55 in the cost.

Therefore, the rate of change is 55/1.

The rate of change in this situation represents the additional cost per person. For every additional person, the cost increases by $55. So, the rate of change tells us how much the cost increases for each additional person on the fishing charter boat.

The correct answer is 55/1.

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