North Seattle Community College
Summer 2012
MATH 097 Elementary Algebra
Practice Test 3
NAME: _______________________
August 6th, 2012
SCORE: ______________________
Question 1
Question 3
a) Find the coordinates of each point shown in the graph.
ABC-
DEF-
b) Consider the linear equation of 3x – 4y = 7:
i) Is (-3, 4) a solution for the linear equation?
ii) What is the y intercept and x intercept?
iii) What is the slope of the equation?
iv) Write the equation in slope intercept form.
v) Can you find another point that is a solution to this equation other than
the intercepts?
vi) Write the equation in point-slope intercept form?
Question 4
a) Use the illustration below to answer the following questions
a. Find the rate of change of the decline on which the woman is running.
b. Find the rate of change of the incline on which the man is running.
b) Graph the line passing through (-2,-4) and (2, 4) and also write the equation of
the line.
c) After it is purchased, a $ 15,000 computer loses $ 1,500 in resale value every
year.
i) Write a linear equation that gives the resale value of the computer years
after being purchased.
ii) Use your answer to part (a) to predict the value of the computer 8 years
after it is purchased.
d) Graph the inequality x-2y > -1
Question 5
5𝑥 + 𝑦 = 5
5𝑥 + 𝑦 = 15
a) Graph the above system of equations and get a solution.
b) Solve the system of equations by substitution method.
c) Solve the system of equations by elimination method.