a union charges each employee a one time $100 initiation fee plus $25 union dues each month. my equation for the function is y=$25 x + $100. how do I graph this over a 12 months.

Insert the monthly values for x and calculate y. Graph those values.

y = 25(1) + 100 = 125

y = 25(2) + 100 = 150

etcetera