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zloy xaker [14]
3 years ago
6

The following set of ordered pairs of the form (x,y) lie on the graph of a function of x. {(0, -1), (1, 2), (2, 5), (3, 8)} Whic

h equation describes the function?
Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
5 0
We can assume that it is aline
y=mx+b
m=slope
b=yintercpt

if you have th epoints (x1,y1) and (x2,y2)
slope=(y2-y1)/(x2-x1)

pick any 2 points
(1,2) and (2,5)
slope=(5-2)/(2-1)=3/1=3

y=3x+b
solve for b
sub a points
(x,y)
(0,-1)
-1=3(0)+b
-1=0+b
-1=b

the equation is y=3x-1

or infunction form
f(x)=3x-1
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Alyssa, Bart and Meghan are
adoni [48]

Hi,

Essentially, we are saying that Alyssa gets 5 parts of the whole thing (140,000), Bart gets 3 parts of the whole and Meghan gets 2 parts of the whole. The sum total of their parts = the whole. So now we need to find out how much one part is. Thus,"one part" should be the variable. Substitute p for "one part", so Alyssa gets 5p, Bart gets 3p, and Meghan gets 2p. Since the sum of the parts = the whole, your problem sets up as:  5p + 3p + 2p = 140,000  -->  10p = 140,000 --> 10p/10 = 140,000/10  -->  x = 14,000.

Alyssa gets 5p or (5 x 14,000)

Bart gets 3p or (3 x 14,000)

Meghan gets 2p or (2 x 14,000)

If the whole was a loss, it would be a negative, and instead of getting money, they would lose money.

3 0
2 years ago
(5a^2+6a+2)-(7a^2-7a-5)
krok68 [10]

For this case we must simplify the following expression:(5a^ 2 + 6a + 2) - (7a^ 2-7a-5) =

We eliminate the parentheses taking into account that:

- * + = -\\- * - = +

So:

5a ^ 2 + 6a + 2-7a ^ 2 + 7a + 5 =

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

5a ^ 2-7a^2 + 6a + 7a +2 +5 =\\-2a ^ 2 + 13a + 7

Answer:

-2a ^ 2 + 13a + 7

8 0
3 years ago
100 points!!! Which graph represents an exponential function?
drek231 [11]

Answer:

its 50 points but still answer is a

5 0
2 years ago
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A shopkeeper selling an article at a discount of 25% looses Rs.125.If he allows 10% discount he gains Rs 250.Find the marked pri
adell [148]

Answer:

i dont know

but try you will get the answer

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3 years ago
Work out the size of the angle X.<br><br> Give your answer correct to 3 significant figures.
aleksley [76]

Step-by-step explanation:

Recall the Ratio for tan

Tan(theta) = opposite / adjacent

Tan (x) = 9 / 5

solve for x (use Tan^-1(...) )

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