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
butalik [34]
3 years ago
8

Does the equation -x+4y=-2 represent a direct variation. if so what is the constant variation

Mathematics
1 answer:
Harrizon [31]3 years ago
5 0

Answer:

Yes it represents.

Variation tax = 0,25

Step-by-step explanation:

Direct variation is the name we gave to the rate of change of a first degree function.

A first degree generic function is:

y = f(x) = ax + b

Now observe the question's function:

- x + 4y = -2

4y = x - 2

y = 1/4x - 2/4

y = f(x) = 0,25x - 0,5

0,25 is our constant variation, because any number that x assume will be multiplied by 0,25.

You might be interested in
Need Help with this. 4(v+4)-7v
Zolol [24]

Answer:16-3v

Step-by-step explanation:

Take off the brackets by multiplying the terms inside the bracket by 4,

4v+16-7v

Simplify

16-3v

8 0
3 years ago
Read 2 more answers
HELP! DUE IN 5 MINS TvT
babunello [35]
I believe that answer is No
5 0
2 years ago
Read 2 more answers
- Which product is greater, (-4) • (-6) or<br> (-7).(-8)? Explain
mr Goodwill [35]

Answer:

(-7)*(-8)

Step-by-step explanation:

Two negatives make a postive so 7*8=56 and 4*6=24.

4 0
2 years ago
Which points are exactly 10 units from the point (–8, –2)? Check ALL that apply.
Archy [21]

Answer:

The points that are exactly 10 units from the point (–8, –2) are (2, –2)  and (–8, 8).

Step-by-step explanation:

The distance formula is;

                               d= \sqrt{( x_{2}-x_{1} )^{2}-(y_{2} -y_{1} )^{2}   }

So for distance between: (–8, –2)  and (2, –2) is:

                             d=  \sqrt{( 2-(-8))^{2}-(-2 -(-2) )^{2}   }

                             d= \sqrt{100}

                            d= 10 unit

Similarly for distance between: (–8, –2) and (–8, 8) is,

                                d=  \sqrt{( -8-(-8))^{2}-(8 -(-2) )^{2}   }

                               d= \sqrt{100}

                               d= 10 unit

6 0
3 years ago
Which function in Excel is used to perform a test of independence? a. T.TEST b. CHISQ.TEST c. NORM.S.DIST d. Z.TEST
denis23 [38]

Answer:

b. CHISQ.TEST

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

The statistic is given by:

\chi^2 = \sum_{i=1}^n \frac{(O_i-E_i)^2}{E_i}

In order to calculate the p value we need to have in count the degrees of freedom , on this case df=(rows-1)(#cols-1). And we can calculate the p value would be given by:

p_v =P(\chi^2 >\chi^2_{calc})

But the correct comand is given by:

b. CHISQ.TEST(Actual range, Expected range)

We just need to put in one column the Observed values and in other the expectec values.

3 0
3 years ago
Other questions:
  • 61. If one angle of a parallelogram measures 32, what are the measures of the remaining three
    11·1 answer
  • a(b+c) =a.b+a.c, where a, b, and c are real numbers. Use the distributive property to simplify the expression 8(3+4)=24+ ?
    10·1 answer
  • Leah babysits during the day for three dollars per hour and at night for five dollars per hour. If she worked five hours in our
    11·2 answers
  • The sum of two numbers s 21. The larger number is 6 less than twice the smaller number. Find the two numbers
    11·2 answers
  • Combine like terms <br> x+x-x+y+y+y-z+z-z
    7·1 answer
  • What is 921,444 rounded to the nearest hundred thousand?
    14·1 answer
  • A school paid $31.25 for each calculator. If the school spent $500 on calculators, how many did the school buy?
    7·2 answers
  • HELPZZZZZZZ 25 PTSS and yes ik it is not math
    15·2 answers
  • Helppppppppp plzzzzz !!!!
    13·1 answer
  • Find the third term in the expansion of (a+b)^9 in the simplest form
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!