Question

If 2004-01-03-01-00_files/i0310000.jpg, then 2004-01-03-01-00_files/i0310001.jpg is a counterexample for which conjecture?

Answer 1

do you can posting here these jpg. files please ? use this button Attache file - below to this window

Answer 2

"if y = 2x^2 -3x -10" then x = 0 is a counterexample for which conjecture?

A.
y is always positive.
B.
y is always negative.
C.
y is a function of x.
D.
The graph of y is a parabola.

plug in x = 0 into the equation and see whether it's positive or negative. if the result is positive, it's a counterexample for y being negative, and if the result is negative, it's a counterexample for y being positive