Download chapter three assessment problems

Name: _____________________________
Date: ________________
Chapter 3 Assessment
1.! Determine the equation of the line between the points (4, 3) and (12, –3). Write your
answer in slope-intercept form f(x) = mx + b.
2.! The function P(n) = 455n –1820 represents a computer manufacturer’s profit when n
computers are sold.
a)! Identify the vertical intercept. Write it as an ordered pair and interpret its practical
meaning in a complete sentence.
Ordered Pair:_________________
b)! Determine the horizontal intercept. Write it as an ordered pair and interpret its
practical meaning in a complete sentence.
Ordered Pair:_________________
3.! Determine the equation of the vertical line passing through the point (4, 7). ____________
4.! The x-axis is a line. Write the equation of this line. ___________
Lesson 3 – Linear Equations and Functions
Assessment
5.! Fill in the table below. Intercepts must be written as ordered pairs. Write “N” if your
answer does not exist (is undefined).
I = Increasing
Equation
D = Decreasing
C = Constant (Horizontal)
Vertical
Intercept
Slope
Horizontal
Intercept
V = Vertical
Behavior
I, D, C, V
y = 2x – 16
f(x) = 8 – 3x
y = –2
y=x
(0, 20)
−5
(0, –9)
(–3, 0)
x=6
!
6.! Solve the systems of linear equations and write the solution as an ordered pair, if possible.
Verify the solution by graphing each line.
2
$
#2y − x = 3
b) !!! "
!
!f(x) = x
a)!!!! #
!!
3
!2x − 4y = −9
!"g(x) = 14 − 4x
!
!
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