Semester 1 Review

Equations

100

Solve:

-2x+6x=8

x=2

200

Solve:

2(x+3)=10

x=2

300

Solve:

4r-5=2r+10

x=7.5

400

3(2x+1)=5x+8

x=5

500

3(x-2)+5=6x+14

x=-5

Inequalities

100

When graphing an inequality, how do you know if the circle should be filled in?

If there is a line under the symbol (its is greater than or equal to OR less than or equal to)

200

Solve the inequality:

3x+11>2x-5

x>-16

300

Which of the following equations would be shaded to the RIGHT?

a. x<14

b. 12<x

c. 2>x

b. 12<x

400

Solve the inequality:

-50<2x+10<10

-30<x<0

500

3x+1<7 or 2x+5>11

x<2 or x>3

Linear Equations

100

Find the slope of the line going through the points (2,6) and (0,5).

1/2

200

Write the equation of the line with a slope of -2 and a y-intercept at 5.

y=-2x+5

300

Write the equation of the line going through (3,3) and (0,-1).

y=4/3x-1

400

Convert to slope-intercept form:

5x+10y=20

y=-1/2x+2

500

Convert to slope-intercept form:

15x-3y=12

y=5x-4

Functions

100

For what representation of functions do we use the vertical line test?

a. graphs

b. tables

c. mappings

d. list of points

a. graphs

200

Is the following list of points a function?

(2,5)(5,2)(3,3)(2,6)

No

300

What is the domain and range of the following set of points?

(1,4)(-2,6)(2,3)(-7,12)

Domain: {1,-2,2,-7}

Range:{4,6,3,12}

400

Evaluate f(x)=6x-10 for x=3

f(3)=8

500

Is the following a function?

f(x)=3x+6

Yes

Systems

100

Solve the system

y=2x

x+3=10

(7,14)

200

Solve the system

y=3x+1

y=x-1

(-1,-2)

300

Solve the system

x+2y=10

2x-2y=8

(6,2)

400

Solve the system

y=4x-6

2x+4y=12

(2,2)

500

Solve the system

3x+6y=10

2x-3y=2

(2,2/3)