Figure ABCD is a parallelogram. If point C lies on the line y = −1, what is the x-value of point C?

The x-value of point C in the parallelogram is: D. 4.
A parallelogram has two set of opposite sides that are parallel and are also equal to each other.
In the graph given, AB must be equal to DC for the shape to be a parallelogram.
Since AB = 4 units, then C will also be 4 units from D. 4 units from D would make C have coordinates of (4, -1).
Therefore the x-value of point C is: D. 4.
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