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ANEK [815]
3 years ago
12

How to tell if a relation is a function and give an example.

Mathematics
1 answer:
Marianna [84]3 years ago
8 0
Ex: f: R ---> R
 f(x)=2x+1
    Definition:  For every value of x , exists only one value of f(x)
f(1)=2*1+1, f(1)=2*1+1=3
f(2)=2*2+1=4+1=5
......
f(100)=2*100+1=200+1=201
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Is 16 cups greater than 1 gallon
frozen [14]
No there are 16 cups in a gallon its equal
5 0
3 years ago
Help ASAP please also explain how you got the answer
SpyIntel [72]

Answer:

D. Obtuse Scalene

Step-by-step explanation:

One of the angles is over 90 degrees, which classifies the triangle as obtuse (right triangles are 90 degrees, and acute triangles are under 90 degrees). None of the side lengths are equivalent, so therefore the triangle is scalene (Isosceles triangles have two sides that are the same length). Hope this helps.

4 0
4 years ago
Write an equation of a line parallel to y = -2x + 3 that passes through (-2,-1)
ElenaW [278]

\boxed{y=-2x-5}

<h2>Explanation:</h2>

The slope-intercept form of the equation of a line:

y=mx+b \\ \\ \\ Where: \\ \\ m:Slope \\ \\ b:y-intercept

The given line has the following characteristics:

y=-2x+3 \\ \\ \\ So: \\ \\ m=-3 \\ \\ b=3

So the line we are looking for needs to be:

y=-2x+b \\ \\ \\ It \ passes \ through \ (-2,-1): \\ \\ -1=-2(-2)+b \\ \\ b=-1-4 \\ \\ b=-5

So, the equation of the line would be:

\boxed{y=-2x+3}

<h2>Learn more:</h2>

Many-to-one function: brainly.com/question/12881881

#LearnWithBrainly

3 0
4 years ago
Solve the function below for y when x=12.<br><br><br><br>y=−3x+20​
densk [106]

Answer:

y = -16

Step-by-step explanation:

y = -3(12) + 20

y = -36 + 20

y = -16

Hope this helps and pls do mark me brainliest if you can:)

6 0
3 years ago
The length of a rectangle is 3 1/6 cm longer than the width. The perimeter of the rectangle is 15 1/3 cm. What are the width and
Nikitich [7]

Answer:

The width of rectangle is  cm and length is  cm.

Step-by-step explanation:

Let,

Width of rectangle = w

Length of rectangle =

Perimeter of rectangle =  cm

Perimeter = 2(Length + Width)

Dividing both sides by 4

Width of rectangle =

The width of rectangle is  cm and length is  cm.

Keywords: rectangle, perimeter

6 0
3 years ago
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