Question

A member ship to the gym cost $25 per person in 1995. The membership cost has increased by an average of $6 per person for each year since 1995.

What is the y- intercept
Write an equation

Answer 1

y-intercept = 25

equation: y = 6x + 25

Explanation:

use the slope intercept form y = mx + b

where:

m = increased in rate = $6

x = rate per year since 1995

b = membership cost of 25 (y-intercept)

1. y-intercept = 25

2. the equation for the membership:

y = mx + b

y = 6x + 25

Answer 2

• 25

• y = 6x + 25

Explanation:

Slope-intercept form:

• y = mx + b, where m- slope, b- y-intercept

The equation for the membership cost is:

• y = 6x + 25, where x- number of years since 1995, y- membership cost

Compared we can see that, b=25 so y-intercept is 25