Find the slope of the line passing through the points (8,-4) and (-7, -4).

Mathematics

2 answers:

Elden [556K]2 years ago

7 0

Hi!

I can help you with joy!

If you notice, the y-coordinates of the points are the same.
This means the slope of the line is 0, because its rise is 0.
Let's use the slope formula:
$\displaystyle\frac{y2-y1}{x2-x1} \\\displaystyle\frac{-4-(-4)}{7-8}$
Simplify:
$\displaystyle\frac{-4+4}{-7-8}$
Simplify:
$\displaystyle\frac{0}{1}$

<u>Answer:</u>

The slope of the line is 0.

Hope it helps.

Do ask if you have any query.

Enjoy your day.

~Silent~

Tju [1.3M]2 years ago

6 0

Answer:

Step-by-step explanation:

slope=m=(Y2-Y1)/(X2-X1)

As given values

take, (X1,Y1)=(-7,-4)

(X2-Y2)=(8,8)

hence X1=-7 , Y1= -4 , X2=8 , Y2= 8

putt the values in the above equation of slope we get ,

m=(8-(-4))/(8-(-7)

m=12/15 Ans

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Use technology to determine an appropriate model of the data. (-1,0), (1,-4), (2,-3), (4,5), (5,12)

Vinil7 [7]

By graphing the points, The best mode of the data will be the quadratic function

There is 5 steps to find the quadratic function that models the data.

First step           ⇒ Plot the data pairs (x, y) in a coordinate plane.
                              which are the blue circles in the attached figure

Second step     ⇒ Draw the parabola you think best fits the data.
                             Which is the red function in the attached figure.

Third step         ⇒ Estimate the coordinates of three points on the
                             parabola, which are (-1, 0), (2, -3), and (5, 12).

Fourth step       ⇒ Substitute the coordinates of the points into the model
                            y = ax² + bx + c
                            to obtain a system of three linear equations.

                            a - b + c = 0           ---------(1)
                            4a + 2 b + c = -3    ---------(2)
                            25a + 5 b + c = 12 ---------(3)

Fifth step   ⇒ Solve the linear system.
                      By using the calculator
                      a = 1 , b = -2 , c = -3

So, the quadratic model for the data is ⇒ y = x² - 2x - 3