Algebra Test 7

Solve: Express asCoordinates

100

x - y + 11 = 0

-2x + y - 15 = 0

 ( -4, 7)

200

10x - 3y -24 = 0

7x + 2y -25 = 0

( 3, 2)

300

11x + 22y + 44 = 0

-x - 4y - 14 = 0

( 6, -5)

400

5x - 2y - 7 = 0

10x - 4y - 14 = 0

0 = 0

All Real Numbers

500

5x - 3y - 6 = 0

10x - 6y - 12 = 0

0 = 0

All Real Numbers

Solve and Graph

100

2x + y - 4 = 0

x + 2y - 5 = 0

( 1, 2)

Graph

200

3x + 2y + 4 = 0

2x + 3y + 1 = 0

( -2, 1)

Graph

300

-3x + y - 4 = 0

4x + y + 10 = 0

( -2, -2)

Graph

400

-2x + y - 9 = 0

x + y + 6 = 0

( -5, -1)

Graph

500

-2x - y + 10 = 0

2x + 2y - 6 = 0

( 7, -4)

Graph

Multiply

100

4x(x-7)

4x^2-28x

200

3x(2x-9)

6x^2-27x

300

8x(7x-4)

56x^2-32x

400

5x(3x^2+2x-4)

15x^3+10x^2-20x

500

7x(2x^2-9x+6)

14x^3-63x^2+42x

Multiply

100

(x+8)(x-8)

x^2-64

200

(x+6)^2

x^2+12x+36

300

(2x+7)(2x-7)

4x^2-49

400

(x+5)(x+2)

x^2+7x+10

500

(x-10)^2

x^2-20x+100

Divide

100

(27x-45)-:9

3x-5

200

(48x-56)-:8

6x-7

300

(72x+108)-:12

6x+9

400

(5x^2-26x+24)-:(5x-6)

x-4

500

(6x^2+13x+6)-:(3x+2)

2x+3