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3 years ago

Identify whether the relations given in the options are functions or not.

Mathematics

1 answer:

stellarik [79]3 years ago

6 0

Answer:

Graphs 1, 2, and 3 are not functions. Graph 4 is a function.

Step-by-step explanation:

Use the vertical line test.

Imagine a vertical line moving from left to right.

If in any position of the vertical line, it intersects more than one point on the graph, then it is not a function.

In graphs 1 and 2 it is clear that there are many vertical lines than would intersect the graph at more than one point.

In graphs 3, a vertical line would intersect the vertical parts of the graph at more than 1 point, so graph 3 is not a function.

The only function is graph 4.

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What is the value of x in the equation 8x – 2y = 48, when y = 4?

Phoenix [80]

Hey there!

So, if $y=(4)$ , this would mean that we would do $(2 \ * \ 4)$ and from this, we would get 8.

We will then need to find what is $(x)$ .

$(x) = 7$

$8*7$ = $\boxed{56}$

So, the equation would really look like . . .

$\left[\begin{array}{ccc} 8*(7)-2*4 = 48 \\ \\ x=\boxed{7}\end{array}\right]$

Hope this helps.
~Jurgen

8 0

3 years ago

Jan and two of her friends raised money by having a bake sale. They split the proceeds. If each person received $32.19, how much

AveGali [126]

Answer: 1. Equation =3x = M , where x = money each received and M= total money received.

2.total money from bake sale=$96.57

Step-by-step explanation:

STEP 1

Let the total money receive from proceeds be = M

and let the amount of money each receive after the split = x

Since Jan and her two friends raised the money together, the total proceeds will be calculated using the equation

x+x+x= M

3 x = M ---- Equation

STEP 2--- Solving

if 3 x= M

and x =mount of money each receive after the split=$32.19

Therefore total money from bake sale, M = 3x = 3 x 32.19 = $96.57

7 0

2 years ago

Read 2 more answers

The cost of renting roller blades is $4 plus $3.50 for each hour that the roller blades are rented. Write an expression to repre

Pavel [41]

Answer:

The expression is equal to $3.50h+4$

Step-by-step explanation:

Let

x ----> the number of hours that the roller blades are rented

y ----> the cost of renting roller blades in dollars

we know that

The linear equation in slope intercept form is equal to

$y=mx+b$

where

m is the slope or unit rate of the linear equation

b is the y-intercept or initial value of the linear equation

In this problem we have

The slope is equal to

$m=\$3.50\ per\ hour$

The y-intercept is equal to

$b=\$4$ ----> value of y when the value of x is equal to zero

substitute

$y=3.50x+4$

For x=h hours

substitute

$y=3.50h+4$

3 0

3 years ago

Multiply and simplify. 2/3 * (1/3 + 3 1/4)=?

kondor19780726 [428]

2/3 × (1/3 + 3 1/4)
= 2/3 (1/3 + 13/4)
= 2/3 (43/12)
= 43/18
= 2 7/18

5 0

3 years ago

Read 2 more answers

Need help on this! Please someone help!!!

Jet001 [13]

This can be easily solved, especially with a calculator.
With the calculator, you can find that $\sqrt{42}$ is about 6.4807.
Multiply that by 2, you get about 13 inches.

If you can't use a calculator, then you can just estimate. Since we know that $\sqrt{36}$ is 6 and $\sqrt{49}$ is 7, $\sqrt{42}$ is in between them, so you can just say somewhere around 6.5.

Multiply 2 * 6.5 and you get 13 inches.

7 0

2 years ago