Question

Y-80x=65 in function notation

Answer 1

f(x) = 80x + 65

Explanation:

f(x) is another way of expressing y → y = f(x)

given y - 80x = 65 ( add 80x to both sides )

y = 80x + 65

or f(x) = 80x + 65 ← expressed in functional notation

Answer 2

Answer:f(x) = 80x + 65f

Explanation:

Since x = days and y = total rent, you've been given two points on your function: (5, 465) and (7, 625). We'll find the slope using those two points:

(625 - 465) / (7 - 5) = 160/2 = 80

Then, use m = 80 and one of the points to write the equation of your line in point-slope form:

y - y1 = m(x - x1)

y - 465 = 80(x - 5)

Convert that to standard form:

y = 80(x - 5) + 465

y = 80x - 400 + 465

y = 80x + 65

y - 80x = 65

In function notation, that's:

f(x) = 80x + 65