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
Simora [160]
2 years ago
15

If y varies as x, and y is 20 when x is 4, what is the constant of variation for the relation?

Mathematics
2 answers:
rusak2 [61]2 years ago
6 0
Y = kx
so
k = y/x

<span>y is 20 when x is 4
k = 20/4 = 5

Answer
The </span><span>constant of variation for the relation = 5</span>
Alinara [238K]2 years ago
5 0
Hi there!

y ∝ x

∴ y = kx ---(i)
Where " k " is the constant of variation & k ≠ 0

Now to determine " k ".
Use the given condition that when :

• x = 4
• y = 20

Substitute th' respective values in Eqn. (i) :-

y = kx

⇒ 20 = k(4)

⇒ 4k = 20

⇒ k = \dfrac {20}{4} = 5

Hence,
The constant of variation for the relation is 5

~ Hope it helps!
You might be interested in
If |u| = 10, |v| = 8, and the angle formed between them is 60°, then u · v = ?
Gre4nikov [31]
U . v  = |u| . |v| cos 60   = 10 * 8 * 0.5 = 40   This is called the scalar (or dot) product.
5 0
3 years ago
write the equation of the line, in standard form, that is perpendicular to y=3x-2 and passes through (-7,2)
34kurt

Answer:

x+3y=-1

Step-by-step explanation:

y=3x-2 so m=3 old slope

the new slope must be -1/3 (opposite reciprocal of the old slope).

y-y0=m*(x-x0)

y-2=-1/3*(x-(-7))

y-2=-1/3x-1/3*7

y-2=-1/3x-7/3

3y-6=-x-7

The standard form for linear equations in two variables is Ax+By=C.

x+3y=6-7

x+3y=-1

8 0
2 years ago
The graph of y = tan ⁡(x − π / 2) compared to the graph of y = tan ⁡x has:
vodomira [7]

Answer:

Last Option moved \frac{\pi}{2} units right

Step-by-step explanation:

If we have a function f(x) and we want to move it horizontally then we make the transformation:

y = f (x + h)

If h then the graph of f(x) moves horizontally h units to the right

If h> 0 then the graph of f(x) moves horizontally h units to the left.

In this case we have the function y = tan (x) and the transformation is performed to obtain y = tan(x- \frac{\pi}{2})

Notice that in this transformation

h

<u><em>Then the graph of y = tan (x) moves horizontally \frac{\pi}{2} to the right</em></u>

5 0
3 years ago
2<br> 1 point<br> Find UV.<br> U V<br> 56<br> 45<br> --D<br> W
Tomtit [17]

Answer:

11

Step-by-step explanation:

UV=UW-VW=56-45=11

5 0
1 year ago
What is 1/8 times 4/7 written in simplest form
Pepsi [2]
Your answer is 1/14.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Given f(x) = 3x + 4 and g(x) = 8x + 1<br> then what is ( f + g )(0))?
    13·1 answer
  • Solve y = x + 6 for x.
    14·1 answer
  • Solve each quadratic equation by completing the square. <br> 6x2 – 28x = - 16
    14·1 answer
  • Can anyone please help me
    9·2 answers
  • Which is greater than 1/7 or 4/6
    5·2 answers
  • Plz help with this question!
    13·1 answer
  • I really need the answer to this
    10·1 answer
  • Help plz i will give brainliest!!
    11·1 answer
  • collin is building vegetable gardens. the first garden will be 3 feet long and 2/3 wide. the second garden will be 3 feet long a
    7·2 answers
  • Pleaseeee help asap
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!