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
oksano4ka [1.4K]
3 years ago
8

What is an equation of the line that passes through the point (4,-1) and has a slope of -2?

Mathematics
1 answer:
ahrayia [7]3 years ago
6 0

Answer:

Option C, y = -2x + 7  

Step-by-step explanation:

1) Slope-intercept format is represented by the formula y = mx + b. By looking at the options, we can see that all of them follow this format.  

So, first, we can identify which equations have a slope of -2 to narrow down our options. In slope-intercept form, the coefficient of the x-term, or m, represents the slope. So, this narrows the answer down to options b and c because they are the only ones that have m as -2.  

2) Next, in order to find which equation is the right answer, we can substitute the x and y values of the given point (4, -1) into both equations, then simplify. Whichever equation results in a true statement must be the answer. Let's try option c first. Substitute 4 for x and -1 for y:

-1=4(-2)+7\\-1 = -8+7\\-1=-1

-1 does equal -1, so this statement is true. Thus, option c must be the answer.

You might be interested in
a student has some $1 bills and $5 bills in his wallet. he has a total of 15 bills that are worth $47. How many of each type of
Alenkasestr [34]
The student would have 8 $5 bills and 7 $1 bills because 5*8=40 and 7*1=7 and adding them together makes 47! Hope that helps!
 
6 0
2 years ago
Read 2 more answers
Find the sample standard deviation of the following data set, using the statistical functions on your calculator.0.2315 0.4725 0
Nonamiya [84]

Answer:

Option C) 0.2358

Step-by-step explanation:

We are given the following data set:

0.23105, 0.4725, 0.8765, 0.4865, 0.5326, 0.7976

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{3.39675}{6} = 0.566125

Sum of squares of differences = 0.1122752556 + 0.008765640625 + 0.09633264063 + 0.006340140625 + 0.001123925625 + 0.05358067562 = 0.2784182787

S.D = \sqrt{\frac{0.2784182787}{5}} = 0.2358

Thus, the standard deviation for given data is

Option C) 0.2358

7 0
3 years ago
What are the roots of: y=x^2+3x-98
Sedaia [141]

Answer:

Step-by-step explanation:

8 0
3 years ago
What's the answer to this <br>4 (w+1)-4w <br>I nee help!
kompoz [17]

Question

what's the answer to this  

4 (w+1)-4w


Answer:

<h2>4</h2>

Step-by-step explanation:


4 (w+1)-4w =

4w + 4 - 4w =

4

5 0
3 years ago
A string of holidays lights at a store have three colors that flash every 6 seconds.Blue light flash every 8 seconds.The store o
kirill [66]
Lights flash every four seconds. the store owner turns on the lights. After how many seconds Will all three lights flash at the same time for the first ...
7 0
2 years ago
Other questions:
  • What is the a simpler form of the following expression (2n+2)(2n-2)
    14·2 answers
  • The health care Jimmy’s employer offers is a fee-for-service plan in which Jimmy and his family must pay for $12,500 in health r
    15·1 answer
  • How to find the first 4 terms of a sequence
    11·1 answer
  • Write 3 and 1/5 s an improper fraction
    5·2 answers
  • E
    5·2 answers
  • Which measurement is more precise: 12.3 meters or 16.52 meters ? ​
    9·1 answer
  • In standard form, the number 72105.4 is written as 7.21054 × 10n where n is equal to ________.
    12·1 answer
  • Solve the equation using the method that seems appropriate.
    8·1 answer
  • Please help me with this algebra problem -3(x-5)+4x=24
    9·2 answers
  • Please help me with this I would give you 50 points.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!