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2 years ago

The function y=kx is given in the table. Find the coefficient k and fill in the table.

Mathematics

2 answers:

Sloan [31]2 years ago

8 0

In the 1st table of values,

take x = 3 and y = 12

since,

y = kx

k = 12÷3

k = 4.

thus,

x = -2, y = -8

x = -1/3, y = -4/3

x = 0, y = 0

y = 16 , x = 3

y = 1/8, x = 1/32

All the best!

rodikova [14]2 years ago

6 0

Answer:

yo im doing the test rn lol wish me luck :D

Step-by-step explanation:

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2 years ago

Evaluate the expression 14C2

lisabon 2012 [21]

$\bf _nC_r= \cfrac{n!}{r!(n-r)!}\qquad \qquad _{14}C_2=\cfrac{14!}{2!(14-2)!}$

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3 years ago

A scatterplot is used to display data for a runner where x is the number of miles run, and y is the time, in minutes, that it ta

larisa [96]

The interpretation of y = 9.5x is that: (a) For each 1 minute, the runner ran 9.5 miles.

<h3>How to interpret the equation?</h3>

The equation of the line of best fit is given as:

y = 9.5x

Divide both sides by x

9.5 = y/x

From the question, we have:

x ⇒ number of miles run
y ⇒ time

This means that:

9.5 = number of miles run/time

Hence, the interpretation of y = 9.5x is that: (a) For each 1 minute, the runner ran 9.5 miles.

Read more about scatter plots at:

brainly.com/question/6592115

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8 0

1 year ago

What number is 15% of 215

PSYCHO15rus [73]

15/100 × 215 = 3225/100
= 32.25

i am a mathematics teacher. if anything to ask please pm me

3 0

3 years ago

Consider function f.

tekilochka [14]

Given:

The function is:

$f(x)=\sqrt{7x-21}$

To find:

The steps of finding the inverse function $f^{-1}(x)$ .

Solution:

We have,

$f(x)=\sqrt{7x-21}$

The steps of finding the inverse function are:

Step 1: Substitute $f(x)=y$ .

$y=\sqrt{7x-21}$

Step 2: Interchange x and y.

$x=\sqrt{7y-21}$

Step 3: Taking square on both sides, we get

$x^2=7y-21$

Step 4: Adding 21 on both sides, we get

$x^2+21=7y$

Step 5: Divide both sides by 7.

$\dfrac{1}{7}x^2+3=y$

Step 6: Substitute $y=f^{-1}(x)$ .

$\dfrac{1}{7}x^2+3=f^{-1}(x)$ , where $x\geq 0$ .

Therefore, the inverse of the given function is $f^{-1}(x)=\dfrac{1}{7}x^2+3$ and the arrangement of steps is shown above.

7 0

3 years ago