In order for two linear lines to be perpendicular, the product of their gradient must be -1.
Let's take y = x + b and y = -x + b
This is already in the form: y = mx + b, where m is 1 and -1 respectively.
Since the product of their gradient is -1, they are said to be perpendicular.
Its the same time 80 minutes= 1 hour and 20 minutes
Denominator, 12 and 9 are on the bottom. and 15 and x are on the right side.
When I was A little ahead when I wanted berries and cream mommy made me do the Little lad dance but now mummy is gone
Answer:
its D
Step-by-step explanation:
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