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meriva
3 years ago
11

Which is an equation of a direct proportion?

Mathematics
1 answer:
statuscvo [17]3 years ago
7 0

Answer:

y=-2x

This type of equation is a form of a direct proportion.

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The function f(x) is given by the set of ordered pairs.
My name is Ann [436]
Answer: f(0) = 6.

Explanation:

Ther ordered pairs are: (x,y) or (x, f(x) )

So, (1,0) means that f(1) = 0 which denies the fourth choice.

(-10,2) means that f(-10) = 2 which denies the first choice

(0,6) means that f(0) = 6, which is the third choice. So, that is the true equation.
4 0
3 years ago
Read 2 more answers
Two numbers have a difference of 0.7 and a sum of 1. What are the numbers?
daser333 [38]
The numbers are 0.85 and 0.15
5 0
3 years ago
What is the derivative of y with respect to x if y = 2/X4
zepelin [54]
You're correct, the answer is C.

Given any function of the form y=x^n, then the derivative of y with respect to x (\frac{dy}{dx}) is written as:
\frac{dy}{dx}=nx^n^-^1

In which n is any constant, this is called the power rule for differentiation.

For this example we have y= \frac{2}{x^4}, first lets get rid of the quotient and write the expression in the form y=x^n:
y= \frac{2}{x^4} =2x^-^4

Now we can directly apply the rule stated at the beginning (in which n=-4):
\frac{dy}{dx}=(2)(-4)x^{-4-1}=-8 x^{-5}= -\frac{8}{x^5}

Note that whenever we differentiate a function, we simply "ignore" the constants (we take them out of the derivative).
6 0
3 years ago
I don't know how to do this, I wasn't paying attention in class
solmaris [256]

Answer:

39.837168574084177751131265854635

Step-by-step explanation:

If you plug it into a calculator, you get that.

Next time, please pay attention in class and save us all a little trouble.

7 0
3 years ago
2.
Sidana [21]
It’s C since it is open and x is less than 2. We can plug in any number on the number line to see if this makes sense.
5 0
3 years ago
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