Answer:
y = 2x + 1
Step-by-step explanation:
- Slope-int form: y = mx + b
- m = slope or rise/run
- b = y-intercept
Given:
- Point (2, 5)
- m (slope) = undefined
When a slope is undefined, the line is a vertical line (it rises but doesn't "run").
To find m, use the given point's x-coordinate because the line you're trying to find will run vertically through that point.
- (x, y) = (2, 5); x = 2
- m = 2
Now the equation becomes y = 2x + b.
To find b, substitute the given point and the found slope into the formula, then solve for b.
- 5 = 2(2) + b
- 5 = 4 + b
- 5 - 4 = b
- b = 1
Now that you know what b is, you can substitute b into the equation:
Answer:
-3x
Step-by-step explanation:
Answer:
How can we answer when no graph illustrations is shown
Step-by-step explanation:
Answer:
see the attachment
Step-by-step explanation:
We assume that the question is interested in the probability that a randomly chosen class is a Friday class with a lab experiment (2/15). That is somewhat different from the probability that a lab experiment is conducted on a Friday (2/3).
Based on our assumption, we want to create a simulation that includes a 1/5 chance of the day being a Friday, along with a 2/3 chance that the class has a lab experiment on whatever day it is.
That simulation can consist of choosing 1 of 5 differently-colored marbles, and rolling a 6-sided die with 2/3 of the numbers being designated as representing a lab-experiment day. (The marble must be replaced and the marbles stirred for the next trial.) For our purpose, we can designate the yellow marble as "Friday", and numbers greater than 2 as "lab-experiment".
The simulation of 70 different choices of a random class is shown in the attachment.
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<em>Comment on the question</em>
IMO, the use of <em>70 trials</em> is coincidentally the same number as the first <em>70 days</em> of school. The calendar is deterministic, so there will be exactly 14 Fridays in that period. If, in 70 draws, you get 16 yellow marbles, you cannot say, "the probability of a Friday is 16/70." You need to be very careful to properly state the question you're trying to answer.