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3 years ago

Can anyone tell me everything there is to know about functions?

Mathematics

2 answers:

jek_recluse [69]3 years ago

6 0

Answer:

function junction

Step-by-step explanation:

KengaRu [80]3 years ago

6 0

Answer:

function

A set of ordered pairs where each first element is paired with one and only one second element and no element in either pair is without a partner.

Step-by-step explanation:

Question 1: Calculate the slope, x-intercept and y-intercept of a linear equation, f(x) = 5x + 4 ?

Solution:

Given,

f(x) = 5x + 4

The general form of a linear equation is,

f(x) = mx + c

So,

Slope = m = 5

Substitute f(x) = 0,

0 = 5x + 4

5x = -4

x = −45

The x-intercept is (−45, 0)

Substitute x = 0,

f(x) = 5(0) + 4

f(x) = 0 + 4

f(x) = 4

The y-intercept is (0,4)

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sasho [114]

Answer:

don't know don't care

Step-by-step explanation:

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4 years ago

The variables y and x have a proportional relationship, and y = 15 when x = 3. What is the value of x when y = 4?

Akimi4 [234]

Answer:

$x=\frac{4}{5}=0.8$

Step-by-step explanation:

We have been given that the variables y and x have a proportional relationship, therefore, we can represent the relationship between x and y as: $y=kx$ , where k is proportionality constant.

Let us substitute x=3 and y=15 in above equation to find the value of k.

$15=k*3$

$k=\frac{15}{3}$

$k=5$

Now let us substitute k=5 and y=4 in our proportionality equation to find the corresponding value of x.

$4=5x$

$x=\frac{4}{5}$

$x=0.8$

Therefore, the value of x will be 0.8, when y equals to 4.

4 0

4 years ago

2(2x-10)-8=-2(14-3x)

sveticcg [70]

⇒ Solution

1) Simplify
4x−20−8=−28+6x

2) Simplify 4x−20−8 to 4x−28
4x−28=−28+6x

3) Group all terms
4x−28=6x−28

4) Cancel −28 from eachside
4x=6x

5) Move all of the terms to one side
4x−6x=0

6) Simplify equation 4x−6x to −2x
−2x=0

7) Divide each side by −2
x=0

3 0

4 years ago

Y=-2|x+2|-4 i need to find y intercept and the x intercept

NeTakaya

Answer:

x-int: ∅

y-int: (0,-8)

Step-by-step explanation:

To find the x and y-intercept, simply plug in zero for x and y:

$0=-2|x+2|-4\\4=-2|x+2|\\-2=|x+2|\\$