Give a formula for the function that starts at x = 1.1 with a value of 7.3 and goes up at a rate of -0.3 units

A function f[x] starts out at x=1.1 with a value of 7.3 and goes up at a rate of -0.3 units on the y-axis for each unit on the x-axis.
Give a formula for this function.

Your rate of change is the slope for this function.
You are given the point (1.1, 7.3)
Use point slope form and solve
(y - y1) = x (x - x1) Where (x1, y1) is the given point and m is the slope.

y - 7.3 = -.3 (x - 1.1)
y - 7.3 = -.3x + .33
y = -.3x + 7.63