Evaluate 8j-k+14when j=0.25 and k =1
1 answer:
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ANSWER
The correct answer is B
<u>EXPLANATION</u>
The first function is
We make y the subject to obtain;
Let us quickly write this in the vertex form.
Since the is negative, the graph opens up.
The vertex is at
The y-intercept is
The x-intercept is found by equating the function to zero.
With these information we can quickly sketch the graph as shown in the attachment(the red graph).
For the second function,
we again make y the subject to obtain,
This is a basic quadratic function that can be graphed easily. Note that it is also a maximum graph.
From the graph the solution to the two functions is
