If y = 7.2 when x = 10, what is the value of x when y = 20? (y varies inversely as the square of x.)

a. 14.4
b. 6
c. 10
d. 20

D. triangular pyramid

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0