Write an equation of a line that passes through (-1,-6) and (3,-2).
1 point
1
Question 3
3.
Write an equation of a line that passes through (2,-5) and (-4,-2).
1 point
1
Question 4
4.
Write an equation of the line described:
passes through (3,9)
Parallel to the line y = -x-1
1 point
1
Question 5
5.
Write an equation of the line described:
passes through (-9,-9)
perpendicular to the line
Writing Equations from Word Problems
6 points
6
Question 6
6.
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 descent. The plane’s height and minutes above the ground are related to each other. Identify the variables in this situation:
x= _______
y= _______
What is the given information in this problem (find all that apply)?
y-intercept _______ slope _______
a. Write an equation to model the situation.
_______
b. Use your equation to find the altitude of the plane after 5 minutes.
_______
6 points
6
Question 7
7.
Suppose you receive $100 for a graduation present, and you deposit it in a savings account. Then each week thereafter, you add $5 to the account but no interest is earned. The amount in the account is a function of the number of weeks that have passed.
Identify the variables in this situation: x= _______ y= _______
What is the given information in this problem (find all that apply)?
y-intercept _______ slope _______
a. Find an equation for the amount y you have after x weeks.
_______
b. Use your equation to find when you will have $310 in the account.
_______
6 points
6
Question 8
8.
Nick is given $50 to spend on a vacation. He decides to spend $5 a day.
The amount Nick has left and the number of days are related. Identify the variables in this situation: x= _______ y= _______
What is the given information in this problem (find all that apply)?
y-intercept _______ slope _______
a. Write an equation relating x and y.
_______
b. Use your equation to find out when Nick will have $15 left.
_______
Finished with all greens?
Complete all problems on the Chapter 4 Study Guide in order to study for the TEST.
