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Nuetrik [128]
3 years ago
12

Is xy = 1 a function

Mathematics
2 answers:
Mandarinka [93]3 years ago
7 0
Yes it is a function

mezya [45]3 years ago
5 0
It can be re-written as 

y = 1/x  -> f(x) = 1/x, which is a function
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A line that passes through the points (−5, 7) (10, 1). Using the mx+b format
lianna [129]

Answer:

y=2x-19

Step-by-step explanation:

I'm guessing you mean slope intercept form y=mx+b

If so, first you would have to find the slope of the line

To do that, use the formula y2-y1/x2-x1

Remember you can pick any coordinate pair for this

I will pick 1=y2 -5=y1 10=x2 and 7=x1

When I put that in the equation I get 1-(-5)/10-7

Overall I get 6/3, or 2

Now to find the y intercept, you plug in the slope and one of the coordinates(any is fine)

I will pick (10,1)

1=y and 10=x and 2=m

1=2(10)+b

this simplifies to 1=20+b

now subtract 20 from both sides and get -19 = b

Now you have your equation y=2x-19

6 0
3 years ago
Read 2 more answers
A new car is purchased for 17000 dollars. The value of the car depreciates at 12.25% per year. What will the value of the car be
Scilla [17]

Answer:

P(t=14) = 17000 (1-0.1225)^{14}= 2728.404

Step-by-step explanation:

for this case we have the following model for the cost of the car:

P(t) = P_o (1-r)^t

Where P_o is the initial amount on this case 17000, t the amount of years after the initial year and r the depreciation rate on this case:

r= \frac{12.25}{100}=0.1225

And for t =14 we can replace into the equation and we got:

P(t=14) = 17000 (1-0.1225)^{14}= 2728.404

5 0
3 years ago
What is the multiplicative inverse of 3y2?
kolbaska11 [484]

Answer:

A multiplicative inverse is a reciprocal. ... A reciprocal is one of a pair of numbers that when multiplied with another number equals the number 1. For example, if we have the number 7, the multiplicative inverse, or reciprocal, would be 1/7 because when you multiply 7 and 1/7 together, you get 1!

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3 years ago
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A share of stock in the Lofty Cheese Company is quoted at 25 1/4. Suppose you hold 30 shares of that stock, which you bought at
baherus [9]
Since each share was purchased when it was still quoted at 20 1/4, then when the stock value increases, it gains (25 1/4 - 20 1/4) = $5.00 for each stock. Since you're to sell 30 shares of your stock, that means you'll be making a profit of (30 x 5 ) = $150.00. Thus, the answer is C<span>.</span>
8 0
3 years ago
Problem page a total of 420 tickets were sold for the school play. they were either adult tickets or student tickets. the number
34kurt
280 student tickets were sold

140 adult tickets were sold
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3 years ago
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