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2 years ago

What is the slope of the line that passes through the points (1, -6) and (-8, 9) ?Write your answer in simplest form.

Mathematics

1 answer:

Dmitry [639]2 years ago

5 0

Answer:

5/-3

Step-by-step explanation:

The slope formula is rise/run.

If you graph this, the two points make a line that slopes downwards. The higher point is in the negative axis, which means that the run will be negative.

you rise up 15 points from the first point (1,-6) to get to the same level as the second point. (-8,9). This is your rise.

You go over to the other point, this is your run. The run is -9.

15/-9

we can simplify this fraction.

5/-3 is your final answer.

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In an effort to determine whether any correlation exists between the price of stocks of airlines, an analyst sampled six days of

vovikov84 [41]

Answer:

Check the explanation

Step-by-step explanation:

Following table shows the calculations:

Delta, X Southwest , Y X^2 Y^2 XY

45.96 38.76 2112.3216 1502.3376 1781.4096

46.8 45.41 2190.24 2062.0681 2125.188

47.93 15.7 2297.2849 246.49 752.501

51.78 49.58 2681.1684 2458.1764 2567.2524

52.17 44.34 2721.7089 1966.0356 2313.2178

47.36 18 2242.9696 324 852.48

Total 292 211.79 14245.6934 8559.1077 10392.0488

Sample size: n =6

Now

$S_{yy}=\sum y^{2}-\frac{\left (\sum y \right )^{2}}{n}=1083.27$

$S_{xx}=\sum x^{2}-\frac{\left (\sum x \right )^{2}}{n}=35.03$

$S_{xy}=\sum xy-\frac{\left (\sum x \right )\left (\sum y \right )}{n}=84.94$

The coefficient of correlation is :

$r=\frac{S_{xy}}{\sqrt{S_{xx}S_{yy}}}=0.436$

7 0

3 years ago

Please help, I’ll mark your answer as brainliest.

timama [110]

Already answered here: brainly.com/question/26919792

5 0

2 years ago

Find a recurrence relation for the number of sequences of 1s, 3s, and 5s whose terms sum to n. (b) Repeat part (a) with the adde

Vladimir [108]

Answer:

The solution has been given in the following attachment .

Step-by-step explanation:

3 0

2 years ago

2. Evaluate the expression -4r +5 y-14<br> when r = 0 and y=-<br> 55

Alecsey [184]

Answer:

Answer is 261

Step-by-step explanation:

-4r+5y-14 r=0 y=55

insert "r" and "y" values into equation

=-4(0)+5(55)-14

evaluate;

-4(0)=0

5(55)=275

so, now the equation would look like this;

=275-14

3 0

2 years ago

Which equation is a step in solving the equation 5 - 3x + 2 equals 19

BigorU [14]

Answer: 5-3x = 17

Step-by-step explanation:

7 0

2 years ago