The function that is a tangent to the graph of f is 
<h3>What is the concept of integral?</h3>
The definite integral can be interpreted as the resulting area of a region. In addition, it is a value in its result, that is, it does not depend on the variable x, which can be exchanged for any other variable without changing the value of the integral.
Knowing that :
- 40x + y = 0 is tangent of f(x)
- slope of the line = -40
therefore, f'(x)|x=a = -40, so only look for a we have:

if, x = -2, then y = 80 (since, 40x + y = 0), therefore, f(x) passes through (-2,80), so in the equation:

Therefore,

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It is a function because every Celsius temperature is associated with only one Fahrenheit temperature. Therefore, option B is true.
<h3>How to convert
Celsius into
Fahrenheit ?</h3>
We are given that the temperature in degrees Celsius C can be converted to degrees Fahrenheit F
We know that the formula

If we are substituting c = -40
Then, we get

For every Celsius temperature, we get only one value of Fahrenheit.
The function is one-one because for every value of Celsius we get a unique value of Fahrenheit.
Hence, it is a function because every Celsius temperature is associated with only one Fahrenheit temperature.
Therefore, option B is true.
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Paralelll ines have same slope
in form
ax+by=c
slope=-a/b
point slope form
the equtaiotn of a line that passes through the point (x1,y1) and has a slope of m is
y-y1=m(x-x1)
so
find slope
24x+8y=7
slope=-24/8=-3
a point is (-5,-8)
m=-3
y-(-8)=-3(x-(-5))
y+8=-3(x+5)
y+8=-3x-15
y=-3x-23
Answer:
5√13 = c OR 18. 0
Step-by-step explanation:
Using the Pyhtagorean Theorem, we will solve for x (in this case our hypothenuse)
a2 + b2 = c2
10(square) + 15(square)= c2 .....10*10 = 100 and 15* 15= 225
100 + 225 = c2
325= c2
√325 = c
5√13 = c OR 18. 0
Answer:
option A is correct answer
divide both sides with 2
hope it helps