Name:_______________________________________
Date: _________________________
QUIZ 1 FUNCTIONS PRECALCULUS
1) What is the y-intercept of the graph of the line whose equation is
a) -5/2
c) 0
?
b) -2/5
d) 4
2) The graph of the equation
a) (0,2)
c) (6,0)
intersects the y-axis at the point whose coordinates are
b) (0,6)
d)(0,18)
3) The value of the x-intercept for the graph of
a) 10
c) -4/5
is
b) 4/5
d) -8
4) Which function has the same y-intercept as the graph below?
a)
b)
c)
d)
5) Determine the domain of:
a.
b.
c.
d.
c.
d.
6) Determine the range of:
a.
b.
7) Use the graph to determine the function´s domain and range
8) On the set of axes below, graph the line whose equation is
.
Part II
1. Find the rate of change for the function, f, where f(-2) = 7 and f(8) = -8. Give the linear equation for the
function, f.
2. Find the equation for the function that has its vertex at (5, -8) and a point at (-2, -12).
3. Given f(x) = 3x + 2 and g(x) = x2 – 5. Find each of the following functions.
a. (f ◦ g)(x)
4. Given f(x) =
a. (f + g)(x)
b. (g ◦ f)(x)
c. (f/g)(x)
2
and g(x) = x2 – 2. Find each of the following functions.
x4
b. (f – g)(x)
c. (fg)(x)