IA3 Review

Factoring a=1

100

b²+8b+7

(b+7)(b+1)

200

b²+16b+64

(b+8)²

300

n²-n-56

(n-2)(n-2)

400

2k²+22k+60

2(k+5)(k+6)

500

4v²-4v-8

4(v+1)(v-2)

Factoring a not1

100

2n²+3n-9

(2n-3)(n+3)

200

3n²-8n+4

(3n-2)(n-2)

300

2n²+5n+2

(2n+1)(n+2)

400

5x²-18x+9

(5x-3)(x-3)

500

6a²+25a+25

(2a+5)(3a+5)

Solve system by substitution

100

y = 4x - 9

y = x - 3

(2,-1)

200

y = -5

5x + 4y = -20

(0,-5)

300

x + 7y = 0

2x - 8y = 22

(7,-1)

400

x - y=3

7x - y = -3

(-1,-4)

500

y= -3x + 4

y = 3x-2

(1,1)

Solve system using elimination

100

8x -6y = -20

-16x + 7y = 30

(-1,2)

200

-8x -10y = 24

6x + 5y = 2

(7,-8)

300

-4y - 11x = 36

20 = -10x -10y

(-4,2)

400

-9 + 5y = -4x

-11x = -20 + 9y

(1,1)

500

6x - 12y = 24

-x - 6y = 4

(2,-1)

X and Y Intercept

100

4x + 5y = 20

x: (5,0)

y: (0,4)

200

x - 2y = 8

x: (8,0)

y: (0,-4)

300

3x - 5y = 15

x: (5,0)

y: (0,-3)

400

3x - 2y = 6

Bonus 400pts: Convert to slope intercept form

x: (2,0)

y: (0,-3)

Slope Intercept Form: y = 3/2x -3

500

2x + y = -4

Bonus 500pts: Convert to slope intercept form

x: (-2,0)

y: (0,-4)

slope intercept form: y = -2x -4