Math 112   Test 4    6 pts each    April 1, 2004


Solve for x:

1.      mc(x - a) + mL = ac(x - 2)

 

Write in slope-intercept form and STATE the slope and y-intercept.

2. 2x + 3y -4 =0

 

Use the given slope and intercept to graph the line:

3.  slope = -2/3, y-intercept = -1

 

 

Graph the line using the given point and slope.

4.  Point = (-2, 4) , slope =undefined

 

 

Write the equation of the line with the given slope and intercept.

5.  slope = 0, y-intercept = -1

 

 

Write the equation of the line thru the given point with the given slope.

6.  Point = (-1, 3) , slope = 8

 

Find Domain

7.  f(x) = 2

 

8. 

 

 

9. 

 

Function evaluation:  Find

f(2), f(a2), f(2b), f(2+b)

 

10.  1. f(x) = x2 - 4

 

11.  f(x) = 2

 

 

Graph parabolas and Find vertex, axis of symmetry, max or min value.

 

12.  f(x) = 3x2

 

 

13.  f(x) = -2 x2 + 5

 

 

Give the domain and range for each of the following.  Also state whether or not the graph represents a function.

14.

 

 

 

 

15.