Does the parabola open up or down?
-10m + m 2 = 21 + y
Put it in the form:
y=ax^2+bx+c
if a>0, then it's a happy parabola (opens up)
if a<0, then it opens down (sad).
-10m + m 2 = 21 + y
y=ax^2+bx+c
if a>0, then it's a happy parabola (opens up)
if a<0, then it opens down (sad).