Solve each inequality.
- 23.Graph
24.Consider the two points and
(a)Find the slope of the line joining them.
(b)Find the equation of the line joining them.
25.Does the point lie within the shaded region of the graph of
26.If find
Solve the system by using the method indicated.
27.
x+y=- 4 (Substitution)
y= 2 x+ 5
ƒ 1 x 2 =x+7, ƒ 1 - 82.
1 - 1, 3 2 yÚx+5?
1 - 1, 5 2 1 2, 8 2.
y=- 3 x+6.
- 21 x+ 4273 x+ 6 - 3 ... 2 x+ 569
28.
2 x+ 3 y=- 7 (Elimination)
3 x+ 2 y= 2
Evaluate each expression.
31.Write with positive exponents only.
32.It takes about sec at a speed of km per sec for light from the sun to
reach Venus. How far is Venus from the sun? (Source: World Almanac and Book of Facts.)
33.Graph using the x-values and to obtain a set of
points.
Perform each indicated operation.
34.
y^3 - 3 y^2 + 8 y- 6
y- 1
17 x+ 4219 x+ 32
17 x^3 - 12 x^2 - 3 x+ 82 + 16 x^2 + 42 - 1 - 4 x^3 + 8 x^2 - 2 x- 22
y= 1 x+ 422 , -6, -5, -4, -3, - 2
3.6 101 3.0 105
1 a-^3 b^222
12 a-^4 b-^32 -^1
8 -^5 # 87
82
4 -^1 + 30
358 CHAPTER 5 Exponents and Polynomials
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