Can you show the working out as well please?
2 answers:
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The expected value is the summary of the product between each element and its probability.
In this case, we have to multiply the number of dollars in each area with the probability of happening. It's important to note that there are 8 portions inside the circle because each of them has 45°.
According to the given diagram $160 represents one slice, $80 represents one slice, and -$40 represents 6 slices.
Having said that, we can express the expected value as follows.
Answer:
Equation: y = -3x -2
Graph: Attached below ↓↓↓↓↓
Step-by-step explanation:
The equation is y = -3x + b
We need B at this point.
Since we have a point given to us,( -2, 4)we can input the x and y
Solve:
4 = -3(-2) + b
4 = 6 + b
b = -2
So the equation we have is y = -3x -2
Let's graph the line.
We go 2 units below the x-axis, because the y-intercept is -2, and the slope is -3, so we go down 3 units, and to the right 1.
Picture attached:
-Chetan K
