order the group of quadratic functions from Widest to Narrowest graph.

Y=7×^2, y= 1/4 x^2, Y =-2x^2
《please Help •3•》

3 answers

https://www.wolframalpha.com/input/?i=plot+y%3D7x%5E2%2C+y%3D+1%2F4+x%5E2%2C+y+%3D-2x%5E2
consider the basic function y = x^2
y = 7x^2 = (√7 x)^2 has been scaled by a factor of 1/√7
y = 1/4 x^2 = (1/2 x)^2 has been scaled by a factor of 2
y = -2x^2 = -(√2 x)^2 has been scaled by a factor of 1/√2
So now just sort the scale factors
y=-1/4x^2,y=-2x^2,y=7x^2
this is the order from widest to narrowest graph

and if u want an explanation lmk
<3