okay gang i need some help what is a restriction on the variable and how do i find it and why do i need it and is anybody willing to help me work through a problem in messages

Ac contractor is building a new subdivision outside of the city. he has started work on the first street and is planning on the other streets to run in a direction parallel to the first. the second street will pass through (-2,4) find the equation of the location of the second street in standard form. a.2x+y=2 b. x-y=2 c.2x+y=2 d. x+y=2

Which rational number could be graphed between -4 and -5

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)