I need help asap pls show your work ill give brainliest

Dylan and Beatrice are working with the same function. Dylan input −8 into the function and got an output of 8.

kolbaska11 [484]

Answer:

Part A: If Beatrice inputs −8 into the function, she must get an output of 8.

Part B: (−4,8) , (4,−8) , (8,−4)

Step-by-step explanation:

Part A:

We know that a function is a relation that maps elements from one set (The domain, the set of the inputs) into elements from another set (the range, the set of the outputs)

Such that each input can be mapped into only one output.

Then if we know that our function maps the input -8 into the output 8.

Always that we use this function with the input -8. we will have the same output, 8.

Then we can conclude that the correct option to the first part is:

"If Beatrice inputs −8 into the function, she must get an output of 8. "

Part B:

Remember, -8 is mapped into 8, then the point (−8,4) (this says "-8 is mapped into 4) can never be on the graph of the function.

But the points:

(−4,8) , (4,−8) , (8,−4)

Could be on the graph of the function.

4 0

3 years ago

Find all of the points of the form (x, −x) which are 7 units from the origin.

Morgarella [4.7K]

Answer:

(-7, 0) and (7, 0)

Step-by-step explanation:

All the points that are 7 units from the origin are on the circle:

x² + y² = 7²

The maximum and minimum values of x obtained when y = 0:

x² = 7²
√x² = √7²
x = ± 7

So

min x = -7 and
max x = 7

The points are:

(-7, 0) and (7, 0)

3 0

3 years ago

Read 2 more answers

Given that tan θ= -65/72 and that angle θ terminates in quadrant II, then what is the value of cos θ?

adoni [48]

Answer:

cosθ = $-\frac{72}{97}$

Step-by-step explanation:

tanθ = -(65/72)

If it is in the 2nd quadrant, this means that y is positive but x is negative

tanθ= opposite/adjacent or (y/x)

tanθ= $\frac{65}{-72}$

We know that the adjacent value = -72 and the opposite value = 65

The hypotenuse can be get by the following

$\sqrt{(65)^2+(-72)^2} = 97$

cosθ is just adjacent/hypotenuse

Our adjacent value is -72

Our hypotenuse is 97, therefore

cosθ = $-\frac{72}{97}$

7 0

3 years ago

Write a compound inequality to represent :

harina [27]

A. -1 < x < = 39

B. <----------------------------^ *------------->
< ___-1___0___1__2__3__4___5___6____7____>

the dot above the 3 is open...the dot above the 6 is solid

4 0

3 years ago

A banana costs three times as much as an apple. The total cost of 1 banana and 1 apple is $1.60 . If a represents the cost of 1

Sedaia [141]

We know that the cost of an apple and a banana equals $1.60
a + b = 1.60
We also know that the cost of a banana is 3 times that of an apple
3a = b
If we divide 4 from 1.60 we will get the price of 1 apple
4a = 1.60
1 apple costs $0.40
So that means 1 banana costs $1.20

5 0

3 years ago

Read 2 more answers