Answer:
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Explanation:
if f(a) means when x = a, the value of f(a) would be the evaluated value.

That means when x = 6, the value of y would be... As shown in the graph. The value of y is - 1 when x = 6.

From the graph, when x = 2, y =-4. Therefore

The last problem. f(x) is defined as function f or function of x which equal to y-term.

Therefore when f(x)= -4 or y = - 4. The value of x would be

Note that y = b where b is a constant will be a horizontal line graph. The line intercepts the graph of polynomial 4 points.