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
luda_lava [24]
3 years ago
14

What is the slope of the line through (1, 9) and (–3, 16)?

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
6 0

Answer:

-7/4.

Step-by-step explanation:

This is  the difference in the y coordinates  / corresponding difference in the x coordinates.

here it is (16 - 9) / (-3-1)

= 7 / -4

= -7/4.

tatiyna3 years ago
5 0

For this case we have that by definition, the slope of a line is given by:

m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}}

Where:

(x_ {1}, y_ {1}) and(x_ {2}, y_ {2})are two points through which the line passes.

We have as data that:

(x_ {1}, y_ {1}) :( 1,9)\\(x_ {2}, y_ {2}): (- 3,16)

Substituting we have:

m = \frac {16-9} {- 3-1} = \frac {7} {- 4} = - \frac {7} {4}

Thus, the slope of the line is- \frac {7} {4}

Answer:

m = - \frac {7} {4}

You might be interested in
Find the value of x if O is between D & B and DO = 15, OB = 3x + 7, and DB = 9x - 2 x= ____
pishuonlain [190]

Answer:

x = 4

Step-by-step explanation:

DO + OB = DB

15 + 3x + 7 = 9x - 2

3x + 22 = 9x - 2

3x + 24 = 9x

24 = 6x

4 = x

7 0
3 years ago
Solve the system of equations 5x-2y=88 3x+4y=58 show all work
diamong [38]
The given equations are:

5x - 2y = 88
3x + 4y =  58

Multiplying the 1st equation by 2, we get the new set of equations as:

10x - 4y = 176
3x + 4y = 58

Adding the two equations, we get:

10x - 4y + 3x + 4y = 176 + 58
13x =234
x =  18

Using the value of x in 1st equation, we get:

5(18) - 2y = 88
- 2y = 88 -5(18)
-2y = -2
y = 1

So, the solution of the equation is (18, 1)

6 0
3 years ago
Read 2 more answers
A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a 15% hydrogen per
FromTheMoon [43]
Your two equations are at the top, in the box is what each variable represents. Below the box is total liters of the 15%, which is going to equal the total liters for 10% plus the total liters for 25%. Make your percentages into decimals. There’s a total of 30 liters so, x+y needs to equal 30. Isolate a variable, I chose y, you can do either or (isolating x would be more math). Y is going to equal 30-x, substitute that for the Y in the second equation, then you need to distribute 0.25 into 30-x. Then it’s simple math, subtract 7.50 from both sides, add like gets, divide both sides by -0.15, making x=20.

8 0
2 years ago
Hey guys plz help meee<br><br>the answers have to be in numbers.​
Licemer1 [7]

Answer:

\overrightarrow{AB}=\frac{-9}{-4}

\overrightarrow{CD}=\frac{-5}{4}

Step-by-step explanation:

A vector quantity is represented by (\frac{y}{x})

where y = y-coordinate and x = x-coordinate

Since vector AB represents a vector in 3rd quadrant,

It starts from point A and ends at B,

Therefore, coordinates of B are (-9, -4)

\overrightarrow{AB} = (\frac{-9}{-4})

Similarly vector CD starts with C and ends at D in the 2nd quadrant,

Therefore coordinates of D will be (-5, 4)

\overrightarrow{CD}=\frac{-5}{4}

7 0
3 years ago
What is meant by the term observed frequencies (O)?
cestrela7 [59]

Answer:

  • The term observed frequencies are found in the sample.

Hence, option 'd' is correct.

Step-by-step explanation:

Unlike the expected frequency which is obtained based on prediction, the observed frequency is the actual frequency that is determined from the experiment.

Therefore, we conclude that

  • The term observed frequencies are found in the sample.

Hence, option 'd' is correct.

4 0
3 years ago
Other questions:
  • What is 4x+6y=-6 6y=18
    6·1 answer
  • How do you write algebraic expressions to model quantities?
    6·2 answers
  • What property is shown in the equation?
    5·1 answer
  • Write the x-intercept of the graph of -6x + y = 8.
    6·1 answer
  • Explain how the value of the 7 in 327,902 will charge if you move it to the tens place
    13·2 answers
  • Please help as soon as possible! THIS IS 45 POINTS
    12·1 answer
  • The circle with radius r units is divided into congruent sectors to create the shape shown below.
    7·1 answer
  • The shape has two right angles, an obtuse angle, and an acute angle. One pair of opposite sides is parallel. Select the correct
    6·2 answers
  • Help? pls i mark brainlest answer
    9·2 answers
  • 1
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!