Respuesta :

irspow
y=50x+550

This is a linear equation of the form:

y=mx+b, where m=rate of change or slope and b=y-intercept.

The slope is the rate of change and the y-intercept is the value of y when x=0, which is the initial value.  So in this context...

The change per week is $50.

The starting amount was $550