Question

Which is the graph of f(x) = StartRoot x EndRoot?

On a coordinate plane, a parabola opens up with a vertex at (0, 0).
On a coordinate plane, an absolute value graph starts at (0, 0) and goes up through (2, 4).
On a coordinate plane, a parabola opens to the right with a vertex at (0, 0).
On a coordinate plane, an absolute value graph starts at (0, 0) and goes up through (4, 2).

Answer 1

The third one: a parabola opening to the right with vertex at (0,0).

Reason: y = √x implies y ≥ 0 and y^2 = x, i.e. x = y^2, which is a parabola that opens to the right. The graph is the right-opening parabola restricted to y ≥ 0 (points like (1,1), (4,2), etc.).