Question

If two lines have slopes of -2/9 and 9/2 are they perpendicular?​

Answer 1

`\huge\boxed{\mathrm{Yes.}}`

Explanation:

If the two lines are perpendicular, Multiplying their slopes must give the result of -1.

So, Let's Multiply these slopes.

=>
`\sf -(2)/(9) * (9)/(2)`

=> -1

Since, the result of multiplying these slopes give -1, So, the two lines are perpendicular.