Graph y = -x.
identify the x intercept
step by step explanation

2x+3y=12 x-y=6 solve the following system equations

Can somebody me out with this question

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?