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murzikaleks [220]
3 years ago
11

select the domain and range, then determine if the relation is a function R= {(7,5), (2,0), (1,-1), (-5,-1), (2,6)}​

Mathematics
1 answer:
-BARSIC- [3]3 years ago
7 0

Answer:

range =5,0,-1,-1,6

domain=5,2,1,-5,2

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PLEASE HELP DUE VERY SOON!
LUCKY_DIMON [66]

Answer:

Yes. (see below)

Step-by-step explanation:

First, find the slope of the line. You can do that by using the slope formula:

      y2 - y1

m = ----------

      x2 - x1

Now, choose any two points from the line to plug in. I'm using the points (0, 3) and (2, 4).

      4 - 3

m = ------

      2 - 0

      1

m = --- = 1/2

      2

Now, to simplify your situation, you can use the slope-intercept formula. To use this, you first need to find the slope and y-intercept.

The y-intercept is where the line meets the y-axis, which is (0, 3), so the y-intercept is 3.

Now, plug them in:

y = mx + b

y = 1/2x + 3

To see if a specific point is on this line—which, in this case, is (20, 13), plug them in and simplify to see if it's true:

13 = 1/2 (20) + 3

13 = 10 + 3

13 = 13

This is true, so the point (20, 13) is on this line.

4 0
3 years ago
The cost y (in dollars) to provide food for guests at a dinner party is proportional to the number x of guests attending the
givi [52]

Answer:

100

Step-by-step explanation:

because it is directly proportional so 4 times ten is 40 and 10 times 10 is 100

pls mark brainliest it would really help me out

7 0
3 years ago
Which ordered pair is a solution of the equation? y=-2x+5y=−2x+5 (Choice A) A Only (2,-9)(2,−9) (Choice B) B Only (-2,9)(−2,9) (
Firdavs [7]

Answer:

Choice B: Only (-2, 9)

Step-by-step explanation:

Of the two choices, only the point (-2, 9) satisfies the equation:

... y = -2x +5

... 9 = -2(-2) +5 = 4 +5 = 9

5 0
4 years ago
Read 2 more answers
Can someone help me please
adelina 88 [10]
Hey I think 4 B it's 5
3 0
3 years ago
Please answer this I need this as soon as possible
Harlamova29_29 [7]
23/2
use the proper sign btw
7 0
3 years ago
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