088 Exam1 Review

Graph

100

Find the slope of the line passing through:

(-10,-14) and (12,-20)

-3/11

200

Find the x and y intercepts of:

2x+y=5

x-int: (-2.5,0)

y-int: (0,-5)

300

Write the equatin of this line in point-slope form:

through (-3,3) and (5,-4)

y+4 = -7/8(x-5)

400

Graph:

3y+2x=9

Pass through: (0,3), (3,1) (6,-1) etc

500

Graph to solve:

0=x+y-1

-9=3y-x

(3,-2)

Linear Equation

100

Determine number of solutions of:

y=2x+3

y=2x-5

No solution

200

Solve for n:

8+2(8n-1)=118

n=7

300

Solve by substitution:

-7x-6y=18

y=4

(-6,4)

400

Solve by elimination:

3x+14y=13

7x+7y=-21

(-5,2)

500

Solve by substituion:

5x - 3y = -22

2x + y = -22

(-8,-6)

Other

100

Simplify:

-5(3a+6)-8

-15a-38

200

Solve the inequality, graph its solution on number line, and write the solution in interval notations:

r/4 -2 < -5

r< -12

300

Solve:

4/(6a-5) = 2/(2a+1)

a=3.5

400

Solve for z:

4x-3x(z+1)=2

z= (2-4x)/(-3x) - 1 

500

Solve the inequality, graph it on the number line, and write the answer in interval notation:

-4(v+3) < -6-3v

 v>-6