Question

Name Date Core Writing Linear Equations 1. An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute. Assume the plane continues at the same rate of descant. The plane's helght and minutes above the ground are related to each other Identify the variables in this situation: xa minutes ya height What is the glven Information in this problem (find all that apply)? y-intercept 30.000 slope2000, one point a second point ) 3. Write an equation to model the situation. y2000x130.000 b. Use your equation to find the altitude of the plane after S minutes, Suppose you receive $100 for a graduation present, and you deposit it in a savings account. Then each week thereafter, you add $5 ta the account but no interest is earned. The amount in the account is a function of the number of weeks that have passed. you Identify the variables in this situation: x- What is the given information in this problem (And all that apply)? pintercept slope _- one point ) a second point ) a Find an equation for the amounty you have afterx weeks,

Answer 1

1) So writing in terms of x, we have: y=30,000-2000x or f(x) = -2000x +30,000

Hence, the y intercept is the point 30,000 ( 0, 30000) and the slope is -2000 for it is a decreasing function.

2) Identifying the variables we have, setting a table