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UNO [17]
3 years ago
12

A linear function that represents the number of hot dogs purchased at a football game is compared to a different linear function

that represents the time left in the game. Describe the key features of the functions that are needed to determine if these lines intersect.
Mathematics
1 answer:
Vsevolod [243]3 years ago
5 0

Answer:

Key features: the functions can not be parallels, this means that their respective slopes can not be equal or multiple to the other

Step-by-step explanation:

Take for instance 2 linear functions,  and

If they intersect in some point in the space, say that is

Then (x1,y1)=(x3,y3), (x2.y2)= (x3,y3)

So, we can compare the two functions and get the following result;

It tells us that if M=m, we get an error, meaning that the functions are in fact parallels and there is no way that they meet in some point.

hope this helps!

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Describe the solutions of 5
djyliett [7]

Answer:

A value, or values, we can put in place of a variable (such as x) that makes the equation true.

Example: x + 2 = 7

When we put 5 in place of x we get: 5 + 2 = 7

5 + 2 = 7 is true, so x = 5 is a solution

6 0
2 years ago
Y=-x^2+20x-64 what is the max height
Inessa [10]

Answer:

36

Step-by-step explanation:

The maximum height is the y-coordinate of the vertex

given a quadratic in standard form : ax² + bx + c : a ≠ 0

then the x-coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

y = - x² + 20x - 64 is in standard form

with a = - 1, b = 20 and c = - 64, hence

x_{vertex} = - \frac{20}{-2} = 10

substitute x = 10 into the equation for y

y = - (10)² + 20(10) - 64 = 36 ← max height


8 0
3 years ago
Tell whether the relationship shown in the mapping diagram is a function or not.
sammy [17]

Answer:

It is a function

Step-by-step explanation:

The x-values do not repeat so it is a function.

4 0
3 years ago
Please help!! Use line plot to help.
muminat
2. is 4/2 or 2     3.is 12/4 or 3    4.is 5 wholes
3 0
3 years ago
Solve for n. (10 5/8 + 3 5/8) + 2 3/8 = n + 12
Brums [2.3K]
I think n is 9 hope i helped 
8 0
2 years ago
Read 2 more answers
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