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Valentin [98]
3 years ago
12

Can someone help with this please?

Mathematics
1 answer:
mel-nik [20]3 years ago
8 0

Answer:

a. Function 1

b. Function 2

c. Function 4

Step-by-step explanation:

✔️Function 1:

y-intercept = 4 (the point where the line cuts across the y-axis)

Slope, using the two points (0, 4) and (1, 6):

\frac{y_2 - y_1}{x_2 -x_1} = \frac{6 - 4}{1 - 0} = \frac{2}{1} = 2

Slope = 2

✔️Function 2:

y-intercept = 1 (the value of y when x = 0)

Slope, using the two points (0, 1) and (1, -3):

\frac{y_2 - y_1}{x_2 -x_1} = \frac{-3 - 1}{1 - 0} = \frac{-4}{1} = -4

Slope = -4

✔️Function 3: y = 5x - 5

y-intercept (b) = -5

Slope (m) = 5

✔️Function 4:

y-intercept = -2

Slope = -1

Thus, the following conclusions can be made:

a. The function with the greatest y-intercept is Function 1 which is 4.

4 is greater than 1, -5, and -2.

b. Only Function 2 has slope that is less than -2.

-4 is less than -2.

2, 5, -1 are all greater than -2.

c. The function's graph with the least steep is the function whose slope value is the smallest. That is the greater the absolute value of the slope, the steeper the slope, and vice versa.

Function 4 has the least steep.

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Evaluate each expression when a= - 4 and b= 3 ab
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-12

Step-by-step explanation:

<u>Step 1:  Substitute</u>

ab -> -4 for a and 3 for b

(-4) * (3)

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Answer:  -12

6 0
4 years ago
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
4 years ago
95.81 rounded to the nearest whole number
Nady [450]
The nearest whole number would be 96
8 0
3 years ago
Find the surface area of the prism.
Vanyuwa [196]

Answer:

400cm²

Step-by-step explanation:

Total surface area of a prism includes the area of the top and bottom triangle sides of the prism, plus the area of all 3 rectangular sides.

Base & Bottom triangle area: 2 x [(8 x 15)/2] = 120cm²

Side triangle area: 17 x 7 + 8 x 7 + 15 x 7 = 280cm²

Total surface area = 280 + 120 = 400cm²

4 0
3 years ago
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