What is the included angle between the given sides?

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

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

How do you solve a question like this?