Question

Toughest math questions in the world.Tough questions heree
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Answer 1

Answer:

Step-by-step explanation:

When you put t=0 into the equation, you get h = c

That's h-intercept, which depends on value of c.

Now when h = 0

You get,

at^2-bt-c=0

t(at-b) =c

if c=0, then t=0 or b/a

if you alter c, the value of t will also alter..

Surely will alter the height,

Therefore my answer is K. I, II and III