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babunello [35]
3 years ago
12

The variable Z is directly proportional to X. When X is 3, Z has the value 57. What is the value of Z when X = 8

Mathematics
1 answer:
Olin [163]3 years ago
5 0
When x = 3 z = 57 57/3 = 19
19*8 = 152
So when X is equal to 8, Z is equal to 152.
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scZoUnD [109]

Answer:

y=-11x+261

Step-by-step explanation:

As you can observe in the image attached, the line that best fits passes through point B and C. That means we can use those point to find the slope of such line.

m=\frac{y_{2} -y_{1} }{x_{2}-x_{1}  }

Where B(11,137) and C(12,126)

m=\frac{126-137}{12-11}=-11

So, the slope of the line that best fits is -11, approximately.

Now, we use the point-slope formula to find the equation.

y-y_{1} =m(x-x_{1} )\\y-137=-11(x-11)\\y=-11x+124+137\\y=-11x +261

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Remember, when we estimate a line for some data on a scatterplot, we are calculating an approximation, that's why we also said "approximately", because the line is an approximation where the majority of point meet.

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3 years ago
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Answer:

2

Step-by-step explanation:

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Is a number is blank then the number is less than it’s absolute value
svlad2 [7]

Answer:

If a number is <u>negative</u> then the number is less than its absolute value.

Step-by-step explanation:

If a number is <u>negative</u> then the number is less than its absolute value.

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35 points<br> What is an approximate average rate of change of the graph from x = 8 to x = 13
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Rate of change is -2 because you can do rise over run to find the constant rate of change, and since you are going down you have a negative slope. 
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3 years ago
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sattari [20]
This answer to your equation is 5/6
7 0
2 years ago
Read 2 more answers
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