Question

Order the group of quadratic functions from widest to narrowest graph. y = 6x2, y = −4.5x2, y = −x2

Answer 1

To solve this problem you must keep on mind the following information: By definition, a quadratic function has the following form: 
 $y=ax^{2}+bx+c$
 Where $a$ is the leading coefficient.
 If the leading coeficient is closer to zero, the parabola is widest,if it has a larger positive or negative value, the parabola is narrowest.
 Therefore, by knowing the information above, you have that the answer is:
 $y=- x^{2} \\ y=-4.5 x^{2} \\ y=6 x^{2}$

Answer 2

y = 6x2, y = −4.5x2, y = −x2

This should be correct answer:) He got it mixed up in his answer below when graphing.:)