The equation is y=mx+c where m is the gradient and c is the y-intercept
Answer:
(2 decimal places)
Step-by-step explanation:
Quadratic Formula: 
-----------------------------------------------
Plug in values:
First value of x:
(2 decimal places)
Second value of x:
(2 decimal places)
<span><span>(<span>−6, −14</span>)</span><span>(<span>−1, −7</span>)
are the answers
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Using it's formula, it is found that the mean of the discrete random variable is given by:
B. 30.47.
<h3>What is the mean of a discrete distribution?</h3>
The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.
Hence, considering the table, the mean of the discrete distribution is:
E(X) = 23 x 0.16 + 25 x 0.09 + 26 x 0.18 + 31 x 0.12 + 34 x 0.24 + 38 x 0.21 = 30.47.
Hence option B is correct.
More can be learned about the mean of a discrete random variable at brainly.com/question/26660401
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Answer:
b
Step-by-step explanation:
The range are the values that y can take.
From the graph we can see that all defined values of y are below the x- axis
Thus range is y < 0 → b
