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Mariulka [41]
3 years ago
12

Which represents a function and why? I'm confused

Mathematics
1 answer:
elena-s [515]3 years ago
5 0

A function has only one output (y) for every input (x). Easy way to identify a function on a graph is by the vertical line test. Imagine a vertical line going through the function, if the imagined line can go through exactly once, it's a function. (The top one is a function, the bottom is not.)

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Solve 117 divided by 18. Show the answer as a fraction in lowest terms.
lisov135 [29]

Answer: 6 1/2

Step-by-step explanation

6 0
3 years ago
A store uses the expression –2p + 50 to model the number of backpacks it sells per day, where the price, p, can be anywhere from
Rus_ich [418]
Revenue = price * number of backpacks
number of backpacks = -2p + 50

p = 9 ; -2(9) + 50 = -18 + 50 = 32
revenue = 9 * 32 = 288

p = 12 ; -2(12) + 50 = -24 + 50 = 26
revenue = 12 * 26 = 312

<u>p = 12.50 ; -2(12.50) + 50 = -25 + 50 = 25</u>
<u>revenue = 12.50 * 25 = 312.50</u>   GIVES THE MAXIMUM REVENUE

p = 15 ; -2(15) + 50 = -30 + 50 = 20
revenue = 15 * 20 = 300
8 0
4 years ago
Read 2 more answers
-3x-5y=-7 <br> Find slope of perpendicular line
Goryan [66]

Answer:

5/3

Step-by-step explanation:

We need to rewrite the equation in slope intercept form

y =mx +b where m is the slope

-3x-5y = 7

Add 3x to each side

-5y = 3x+7

Divide by -5

y = -3/5 x -7/5

The slope of this line is -3/5

Perpendicular lines  have slopes that are negative reciprocals

-1 / (-3/5)

5/3

The slope of the perpendicular line is 5/3

7 0
3 years ago
(13-(4-1)-2)+4 Help I got finals and don't understand
V125BC [204]
(13 - (4 - 1) -2) +4
Do the inner parentheses first

(13 - (3) - 2) +4

(13 - 3 - 2) + 4

(8) + 4

12
Hope this helps!
Brainliest is much appreciated!
8 0
2 years ago
Read 2 more answers
Find the point of intersection:<br> 3x=y-2<br> 6x=4-2y
IgorC [24]
Answer: (0, 2)

3x = y - 2
6x = 4 - 2y

3x = y - 2
- y - y
-y + 3x = - 2
- 3x - 3x
-y = - 3x - 2
/-1 /-1
y = 3x + 2


6x = 4 - 2y
+ 2y + 2y
2y + 6x = 4
- 6x - 6x
2y = - 6x + 4
/2 /2
y = -3x + 2


y = 3x + 2
y = -3x + 2


3x + 2 = -3x + 2
- 2 - 2
3x = -3x
/3 /3
x = 0


y = 3x + 2
y = 3(0) + 2
y = 2

(x, y) --> (0, 2)

Therefore, the two equations intersect at (0, 2)



Hope this helps!
7 0
3 years ago
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