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valentinak56 [21]
2 years ago
9

Find the slope of the line with points (-1,-2) (2,7)

Mathematics
1 answer:
aleksandrvk [35]2 years ago
4 0

Answer:

3

Step-by-step explanation:

You may use this formula to find the slope of a line going through points (x_1,y_1) \text{ and } (x_2,y_2):

\frac{y_2-y_1}{x_2-x_1}

Notice the numerator is just a subtraction of the y's while the denominator is a subtraction of the x's. The order you choose your y's on top will matter to how you subtract the x's.

You could just line up the points and remember that the y difference goes on top and the x difference goes on bottom.

This is my favorite way.

(-1  ,   -2)

minus

(2  ,     7)

---------

-3      -9

The slope is -9/-3 or 3.

You could do it the other way:

(2   ,    7)

minus

(-1   ,    -2)

--------------

3           9

The slope is 9/3 or 3.

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When is it logical to use 22/7 instead of 3.14 for pi
Aloiza [94]
22/7 is pie just in fraction form which makes it very logical depending on the problem.
4 0
3 years ago
40 POINTS AND BRAINLIEST!! I NEED THIS DONE ASAP
inna [77]

(a) Answer: One solution.

Explanation: two lines that have same slope with opposite sign will necessarily cross each other at a single point, as one is "pointing uphill" and the other "downhill."

(b)  Answer: Infinitely many solutions.

Explanation:

2x + 3y = 5.5

4x + 6y = 11   | divide by 2

-->

2x + 3y = 5.5

2x + 3y = 5.5

--> equations are identical.

2x + 3y = 2x + 3y

so any (x,y) will satisfy this equation. This means infinitely many solutions.

(c) Answer: One solution

Explanation:

Continuing the two lines it becomes obvious they will cross at one point (the solution)

(d) Answer: No solution

Explanation: If the two lines are parallel, they will never cross (by definition of "parallel"). Therefore there will be no solution to the corresponding linear system.


8 0
3 years ago
The Highest Common Factor of three numbers is 6 and the Lowest Common Multiple is 24 What are the three numbers?​(PLEASE HELP)​
vazorg [7]

Answer:

GCF of 3 and 6 is 3.

LCM of 3 and 6 is 6.

Step-by-step explanation:

6 0
2 years ago
Does anyone know the answer?
Serhud [2]

Answer:

6a {}^{2}  - 2c + 2a {}^{2}  - 2c {}^{2}  \\ 8a {}^{2}  - 2c {}^{2}  - 2c

Good luck!

Intelligent Muslim,

From Uzbekistan.

8 0
2 years ago
Name the property that is illustrated.<br> 1 x 3/4 = 3/4
Tju [1.3M]

Answer:

Associative Property of Addition

5 0
2 years ago
Read 2 more answers
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