The domain of the piecewise function is ​(minusinfinity​,infinity​).
a. Graph the function.
b. Use your graph to determine the​ function's range.
​f(x)equalsleft brace Start 2 By 3 Matrix 1st Row 1st Column 4 x 2nd Column if 3rd Column x less than 0 2nd Row 1st Column negative 4 x 2nd Column if 3rd Column x greater than or equals 0 EndMatrix

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Part 1
a. Choose the correct graph below.
A.
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A coordinate system has a horizontal x-axis labeled from negative 40 to 40 in increments of 8 and a vertical y-axis labeled from negative 40 to 40 in increments of 8. A V-shaped graph that opens downward has vertex (0, 0) and passes through the points (negative 1, negative 4) and (1, negative 4).
B.
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-40
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A coordinate system has a horizontal x-axis labeled from negative 40 to 40 in increments of 8 and a vertical y-axis labeled from negative 40 to 40 in increments of 8. A line that falls from left to right passes through the points (negative 1, 4), (0, 0), and (1, negative 4).
C.
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-40
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A coordinate system has a horizontal x-axis labeled from negative 40 to 40 in increments of 8 and a vertical y-axis labeled from negative 40 to 40 in increments of 8. A line that rises from left to right passes through the points (negative 1, negative 4), (0, 0), and (1, 4).
D.
-40
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-40
40
x
y