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
Effectus [21]
3 years ago
14

What is the slope-intercept equation of the line going through (-2,5) and (1,-1)?

Mathematics
1 answer:
jarptica [38.1K]3 years ago
3 0

Answer:

y = -2x+1

Step-by-step explanation:

The slope is found by

m = (y2-y1)/(x2-x1)

   = (-1-5)/(1--2)

    = -6/(1+2)

    = -6/3

    = -2

Then we can use point slope form to make an equation

y-y1 = m(x-x1)

y-5 = -2(x--2)

y-5 = -2(x+2)

Distribute

y-5 = -2x -4

Add 5 to each side

y-5+5 = -2x-4+5

y = -2x+1

This is in point slope form

You might be interested in
Please help me with Part C of this question!!!
anzhelika [568]

Answer:

  a. 3/4 inches per minute

  b. -1 1/8 inches per minute

  c. B is fastest; 1 1/8 is more than 3/4

Step-by-step explanation:

A <em>change</em> is a <em>difference</em>. A <em>rate of change</em> is <em>one difference divided by another</em>, usually the change in y-value divided by the change in x-value.

__

<h3>a.</h3>

The change in elevation is the difference between the elevation at the end of the period (6 inches) and the elevation at the beginning of the period (3 inches). The change in time period is the difference between the end time (8 min) and the beginning time (4 min).

  change in elevation per minute = (6 -3 inches)/(8 -4 min)

  = (3 inches)/(4 min) = 3/4 inches/minute

__

<h3>b.</h3>

Similarly, ...

  change in elevation per minute = (3 -7 1/2 inches)/(18 -14 min)

  = (-4 1/2 inches)/(4 min) = -1 1/8 inches/minute

__

<h3>c.</h3>

We know that 3/4 is more than -1 1/8, but when we talk about the "fastest rate of change", we're generally interested in the magnitude--the value without the sign. That means we understand a rate of change of -1 1/8 inches per minute to be "faster" than a rate of change of 3/4 inches per minute.

The rate of change from Part B is fastest. 1 1/8 inches per minute is more than 3/4 inches per minute.

6 0
1 year ago
Explain how you decide whether the final answer to a multiplication problem is
Evgesh-ka [11]

Explanation:

Regardless of the number of factors, the product will be negative if an odd number of factors are negative.

In the example, 3 of the factors are negative. 3 is an odd number so the product will be negative.

  -2*-3*-1*1 = -6

_____

Of course, the product will be zero if any factor is zero, regardless of the signs of any other factors.

8 0
3 years ago
For what value of c does the following system have no solution?<br><br> 1/2x+1/5y=2<br> 5x+2y=c
Minchanka [31]

Answer:

Step-by-step explanation:

\frac{1}{2}x+\frac{1}{5}y = 2 \mid 5x + 2y = c

First let's multiply the 1st equation by 10.

5x + 2y = 20 \mid 5x + 2y = c

So, we can see that the equations have the same coefficients and that implies  they are equal.

So the equation has no solutions for. c \in R \setminus{20}

3 0
2 years ago
Read 2 more answers
What is reciprocal of the fraction in the equation 3/5(2x+8)=18?
Katen [24]

Answer:

5/3

Step-by-step explanation:

The reciprocal is the fraction upside down.

3 0
2 years ago
You decided to throw a fair die four times.
Finger [1]

Answer:

If all you care about is whether you roll 2 or not, you get a Binomial distribution with an individual success probability 1/6. The probability of rolling 2 at least two times, is the same as the probability of not rolling 2 at zero or one time.

the answer is, 1 - bin(k=0, n=4, r=1/6) - bin(k=1, n=4, r=1/6). This evaluates to about 13%, just like your result (you just computed all three outcomes satisfying the proposition rather than the two that didn’t).

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • a car with 5 tires (four road tires and a spare in the trunk) travelled 30000 km. All five tires we used equally. How many km of
    7·2 answers
  • 5/8 = 3/4b - 7/12 <br>Solve for b. <br>Show step by step please.
    15·2 answers
  • -3x^2 plus 24x = 27 <br> complete the square
    12·2 answers
  • Compute the takt time for a service system that intended to perform a standardized service. The system will have a total work ti
    8·1 answer
  • The function f(x) is a cubic function and the zeros of f(x) are -3, -2, and 1. The y-intercept of f(x) is -24. Write the equatio
    10·1 answer
  • Here are six number cards.
    14·1 answer
  • Last Saturday, the MoviePlex theater sold 1,456 tickets. The theater sold 6 times as many regular-price tickets as it sold disco
    8·2 answers
  • What is the amount of sales tax owed on a $35 jacket if the tax rate is 6%
    6·1 answer
  • Complete the table for the given rule. hi guys this is question is Rule: y is 1/3 times as large as x x y 0 6 12 y need to know
    7·1 answer
  • Answer the following:
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!