Phase

y = k \cdot x - ω \cdot t

$y = k * x - omega * t$

(ω) Angular Frequency

$(omega)"Angular Frequency"$

(x) Location

$(x)"Location"$

(k) Wave Number

$(k)"Wave Number"$

(t) Time

$(t)"Time"$

Reference

Young, Hugh and Freeman, Roger. University Physics With Modern Physics. Addison-Wesley, 2008. 12th Edition, (ISBN-13: 978-0321500625 ISBN-10: 0321500628 ) Pg 494