Suppose that a continuous function is periodic with period 1 and is linear between 0 and 025

Question:

Suppose that a continuous function is periodic with period 1 and is linear between 0 and 025 and linear between - 0.75 and 0. In addition, it has the value 1 at 0 and 2 at 0.25. Sketch the function over the domain [-1, 1], and give a piecewise definition of the function.