Respuesta :
The graph that represents the piecewise function, g(x) is the option;
- On a coordinate plane, a piecewise function is comprised of 2 lines and a curve. A line starts at a closed circle at (-2, 0), and goes through (-4, 2). A curve starts at an open circle at (-2, -4), and curves to an open circle at (0, 0). From the open circle at (0, 0), a line goes through (4, 4).
How can the correct graph be found from the descriptions?
The piecewise function is presented as follows;
- g(x) = -x - 2; x ≤ -2
- g(x) = -x²; -2 < x < 0
- g(x) = x; x > 0
The graph that represents can be found as follows;
Characteristics of the correct graph
- There are two lines and a curve
- The graph starts with a closed circle at (-2, 0)
Slope of the line -x - 2 is -1, therefore as x-values reduces the y-values increases by the same amount, which corresponds with the points (-2, 0), and (-4, 2).
Therefore;
- The line -x - 2, goes through (-2, 0), and (-4, 2)
The points (-2, -4), and (0, 0) corresponds with a points on the curve g(x) = -x².
Therefore;
- The curve starts at (-2, -4) and goes through (0, 0) having open circles at both points.
The points (0, 0), and (4, 4), corresponds with points on the line g(x) = x
Therefore;
- From the open circle at (0, 0) a line goes through the point (4, 4)
The correct option is therefore;
- On a coordinate plane, a piecewise function is comprised of 2 lines and a curve. A line starts at a closed circle at (-2, 0), and goes through (-4, 2). A curve starts at an open circle at (-2, -4), and curves to an open circle at (0, 0). From the open circle at (0, 0), a line goes through (4, 4).
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