1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KIM [24]
3 years ago
12

Help me pls ☹️☹️☹️☹️​

Mathematics
1 answer:
zheka24 [161]3 years ago
4 0

The slope of a line can be found by graph using rise over run (\frac{rise}{run}). Look at the image below to see what this mean.

Rise = vertical

run = horizontal

I took two clear points on the line as seen below and drew a right angle that formed a right triangle with the line.

Now let's count how many units the rise is (look at the second image). This is 3 units

rise = 3

Count the units of the run (third image). This is 1 unit

run = 1

Let's put these two numbers together in the \frac{rise}{run} form:

\frac{3}{1} or simplified = 3

However, this is not the final answer. This is a negative slope, meaning that when you look at the line from left to right (like when you are reading words) the line reaches from the top left corner to the bottom right corner. A positive slope (reading left to right) reaches from the bottom left corner to top right corner.

To signify that the slope is negative you simply add a negative sign to it:

-3

Let me know if you have any further questions.

You might be interested in
Find the sum which becomes 19,320 on increasing by 15% (Percentage)
kodGreya [7K]

Answer:

Step-by-step explanation:

100-15=85

85 % of x=19,320

x=19,320 ×100/85≈22729.41

3 0
3 years ago
Kendell has an account balance of -$127 then she paid $23 for an app on her phone. How much money is in her account?
andre [41]

she will have a balance of negative 150

8 0
3 years ago
Read 2 more answers
Select the correct answer. <br><br> If k + 45 = 60, what is k? A. 12 B. 15 C. 25 D. 105 E. 110
Ne4ueva [31]

Answer:

B.15

Step-by-step explanation:

k+45=60

=>k=60-45

=>k=15

mark me as brainliest plz

4 0
3 years ago
Read 2 more answers
The table shows the elevations of the highest and lowest points in France where are the negative numbers are feet below sea leve
svlad2 [7]
I think it is B but I am sorry if it isn’t
5 0
3 years ago
Read 2 more answers
The equation y=-7x-5 and another equation have a solution of (-2,9). what is the second equation?
gtnhenbr [62]

I'm guessing there's a menu of choices to go with this one, and we just need to try (-2,9) with each choice.  But it's a much more interesting problem without the menu.

First we verify (-2,9) is on the line y=-7x-5,

-7(-2)-5 = 14-5 = 9, good.

There's a whole family of possibilities for the second equation, basically all the other lines through (-2,9).  Believe it or not, that's called a <em>pencil of lines. </em>We need two parameters a and b, whose values only matter in ratio, to represent all these.  If we tried to do it with just the slope we'd miss one line, the vertical line x=-2.

We'll do the line through (-2,9) and (a,b).  A little thought tells us it's

(a + 2)(y - 9) = (b - 9)(x + 2)

When we plug in (-2,9) we get 0=0, good.  When we plug in (a,b) we get

(a + 2)(b - 9) = (b - 9)(a + 2)

which is also true.

(a + 2)(y - 9) = (b - 9)(x + 2)

(b - 9)x - (a+2)y = -9(a + 2)  - 2(b-9)

(b - 9)x - (a+2)y =  -9a - 2b

We can choose any a and b and we'll get the line through (-2,9) and (a,b), so it will have a solution (-2,9) where it meets y = -7x - 5.

We need to make sure (a,b) isn't already on  y = -7x - 5 which is the same line twice.

For arbitrary a,b,  b ≠ -7a - 5, the lines y = -7x - 5  and

(b - 9)x - (a+2)y =  -9a - 2b

meet at exactly one point, namely (-2,9)

Let's generate a few and plot.  We'll do a vertical and horizontal an a couple of others.  

a=-2, b=0,     (b - 9)x - (a+2)y =  -9a - 2b

-9x = 18

x = -2

a=0, b=9,    (b - 9)x - (a+2)y =  -9a - 2b

-2y = -18

y = 9

a=1, b=1,    (b - 9)x - (a+2)y =  -9a - 2b

-8x - 3y = -11

a=1, b=3,    (b - 9)x - (a+2)y =  -9a - 2b

-6x - 3y = -15

2x + y = 5

plot y=-7x+5, x = -2, y = 9, -8x - 3y = -11, 2x - y = 5

<em />

5 0
3 years ago
Other questions:
  • Tonya selected a pair of shoes for the regular price of $80. How much money will she save by using the 20% off coupon? Justify y
    9·2 answers
  • What is the largest perfect square less than 225 that is a multiple of 9?
    7·1 answer
  • Boleslaw: How many yards for 8 uniforms?
    13·1 answer
  • Please help me and show your work and i will mark you the brainliest!!!!!!!!!!!!
    13·1 answer
  • Please help me, I’ve been stuck on this question for a long time.
    7·1 answer
  • −5 1/5÷(2/3) dividing fracions
    8·1 answer
  • George is 4 times as old as his daughter was 2 years ago. George is 36
    5·2 answers
  • 18 divide by 2/3 ??????????
    14·2 answers
  • At my new job I have two options for a salary. I can either be paid $400 a week or $300 a week plus a 15% commission on all sale
    6·2 answers
  • What is the correct answer to this ?​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!