Question

Can someone help me with these two problems.

Answer 1

@mathmate what are the symbols between the 0 and the x and y ?

Answer 2

\(\ne\) means "not equal".

Answer 3

ohh thank you

Answer 4

Proportions are like fractions. You can create an equivalent proportion just like you can create an equivalent fraction.

For example,
\(\frac68 = \frac34\)
But when variables are used, we do not want a zero in the denominator, that is why there's a restriction that \(x\ne 0\) and \(y\ne 0\).

Answer 5

thank you @mathmate

Answer 6

You're welcome! :)