Find the slope of the line that passes through (8,1) and (1,4)*
2 answers:
Answer: -7/3
Step-by-step explanation: To find the slope of this line, we can use a few different methods but I will be showing you the <em>table method</em>.
So let's make a table for our ordered pairs with the <em>x values</em> in the left column and the <em>y values</em> in the right column.
Our first ordered pair is (8,1) so we put an 8 in the x column and a 1 in the y column. Our second ordered pair is (1,4) so we put a 1 in the x column and a 4 in the y column. Now, remember that the slope is always equal to the rate of change or the change in y<em>/</em>change in x.
Using the table, we can see that the values of <em>y</em> go from 1 to 4 so the change in y is 2 and the values of
x go from 8 to 7 so the change in x is -7.
Therefore, the rate of change or the change in y<em>/</em>change in x is 3/-7 which means that the slope is also equal to 3/-7 or -7/3.
Work is also provided in the image attached.
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Answer:
225 students scored 65 or better and 75 students scored 88 or better.
Step-by-step explanation:
We are given that The five-number summary for the scores of 300 nursing students are given :
Minimum = 40
Median = 82
Maximum = 100
is the first quartile and is the median of the lower half of the data set. 25% of the numbers in the data set lie below
and about 75% lie above
.
is the third quartile and is the median of the upper half of the data set. 75% of the numbers in the data set lie below
and about 25% lie above
i) .About how many students scored 65 or better?
Since we know that 75% lie above .
So, Number of students scored 65 or better =
ii)About how many students scored 88 or better?
Since we know that 25% lie above
So, Number of students scored 88 or better =
Hence 225 students scored 65 or better and 75 students scored 88 or better.