Given the following system of equations, identify the type of system.

y = -x + 4
2x + 2y = 8

independent
inconsistent
equivalent

What is the value of x when x + 7 = 21?

Agrid shows the positions of a subway stop and your house. the subway stop is located at (-5,2) and your house is located at (-9,9). what is the distance, to the nearest unit, between your house and the subway stop?

Let f(x) = 1/x^2 (a) use the definition of the derivatve to find f'(x). (b) find the equation of the tangent line at x=2