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postnew [5]
4 years ago
11

State the domain of the following relation and state whether it’s a function.

Mathematics
2 answers:
ioda4 years ago
8 0

Answer:

B.

Step-by-step explanation:

The Domain is {-8, - 3, 1 , 4}  and it is not a function because  the value 1  maps on to 2 and -5. A one-to-many relation is not a function.

igomit [66]4 years ago
3 0

For this case we have a series of ordered pairs of the form(x, y).

We have that it is not a function because the same value of the starting set has two values in the arrival set. These are:

(1,2)\ and\ (1, -5)

For its part, the domain is given by all values of x, these are:

-8,1, -3 and 4.

Answer:

Option B

Domain: {- 8,3,1,4}; No

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What does 5x + 10y equal
leonid [27]

Answer:

Step-by-step explanation:

 Slope = 1.000/2.000 = 0.500

 x-intercept = 0/1 = 0.00000

 y-intercept = 0/-2 = -0.00000

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    5*x-(10*y)=0  

Step by step solution :

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  5x - 10y  =   5 • (x - 2y)  

Equation at the end of step  1  :

Step  2  :

Equations which are never true :

2.1      Solve :    5   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Equation of a Straight Line

2.2     Solve   x-2y  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  x-2y  = 0 and calculate its properties

Graph of a Straight Line :

 

 

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 0/-2 so this line "cuts" the y axis at y=-0.00000

 y-intercept = 0/-2  = -0.00000  

Calculate the X-Intercept :

When y = 0 the value of x is 0/1 Our line therefore "cuts" the x axis at x= 0.00000

 x-intercept = 0/1  =  0.00000  

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 0.000 and for x=2.000, the value of y is 1.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 1.000 - 0.000 = 1.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     =  1.000/2.000 =  0.500  

Geometric figure: Straight Line

 Slope = 1.000/2.000 = 0.500

 x-intercept = 0/1 = 0.00000

 y-intercept = 0/-2 = -0.00000

6 0
4 years ago
Write an equation in point slope form for the line that passes through the given point and the given slope
ad-work [718]

Answer:

y + 7 = 45(x + 2).

Step-by-step explanation:

y - y1 = m(x - x1)

Here m = 45 and (x1, y1) = (-2, -7) so we have:

y - (-7) = 45(x - (-2))

y + 7 = 45(x + 2).

4 0
3 years ago
What is the converse of the following statement? If a triangle has three congruent angles, then it is an equiangular triangle.
Sauron [17]

If a triangle is an equilateral triangle, then it has three congruent sides.

4 0
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25 POINTS!!!
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Answer:

a triangular prism net has two rectangular bases and triangular faces, a square pyramid has a square base and the faces are triangular, a cube has all squares, and a rectangular prism has rectangular bases and rectangular faces

Step-by-step explanation:

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Answer:

it's "vertical angles and linear pair theorem"

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