Question

If ab=0, where must the point (a.b) lie? Justify your answer.

Answer 1

Help?

Answer 2

(a,b)

If a*b = 0 then by the Zero Product Property, a = 0 or b =0.

Question One for You: Where do all points on the plane have to lie if the x-coordinate of the point is zero? We're talking points like (0,5); (0,-8), for example.

Answer 3

@progarimen

Answer 4

On x-axis or y-axis?

Answer 5

ab = 0 implies a = 0 or b = 0 (or both).
(0,b) or (a,0) or (0,0)

Answer 6

For the question I asked, it is this: y-axis

Next question: Where do all points on the plane with y-coordinate 0 have to lie?

Points such as (5,0), (-2,0) and such. @progarimen

Answer 7

@Directrix That's x-axis