Practice problem
If f(x)=ax2+bx+cf(x)=ax^2+bx+cf(x)=ax2+bx+c is a quadratic function, what must be true of aaa?
aaa is zero
aaa is nonzero
a>0a>0a>0
a<0a<0a<0
Type a concept, like “slope” or “photosynthesis”.
