exam Maths Puzzle Numerical Ability

find the y-intercept of the cubic f(x)=(x-2)(x+1)(x-3)

my ans was (0,-6)

was I right

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exam Other Question

Perform Gauss-Jordan elimination on this augmented matrix.

3 -4 2
0 -1 7
3/2 -2 1

Guass-Jordan made more sense in equation form. Nicky is making cookies. She needs to add 1 1/2 teaspoons of baking soda, but she can only find the 1/4 teaspoon measuring spoon. How many 1/4 teaspoon measures should she use?