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F(x); solving for x
Finding slope
Finding the b
F(x); finding the value of f(x)
Slope Intercept Form
100

f(x) = x + 2; 22

22 = x + 2

20 = x


100
(3, 1) (2, 4) 

m= -3

100

(1, 3), m=5 

-2

100

f(x) = x + 3; x = 15

18 

100

2x+y=5

y = -2x + 5

200

f(x) = x + 5; 25

x + 5 = 25

x = 20

200

(4, 2) (3, 4) 

-2

200

(-2, 6), m=3

0

200

f(x) = 28 + 3x; x = 2

34

200

3y−6x=9

y = 2x + 3

300

f(x) = 15x + 10; 70

70 = 15x + 10 

60 = 15x 

4 = x 

300

(-14, 2) (-3, -4) 

m = -6/11

300

(5, -3), m=12

-63

300

f(x) = 8x + 14; x = 3

38

300

4x − 2y = 8

y = 2x − 4

400

f(x) = 20 + 9x; 65


65 = 20 + 9x 

45 = 9x 

5 = x

400

(7, 8) (6, 8) 

zero 

400
(8, -3), m=-1/4

-1

400
f(x) = 1/3x + 12; x = 24

20

400

5y + 10x = 20

y = −2x + 4

500

f(x) = 16 + 4x; 28 

28 = 16 + 4x 

12 = 4x 

3 = x

500

(2, 4) (2, 15) 

undefined, x = 2 

500

(-6, -4), m=1/3

-2

500

f(x) = 25x - 125; x=8

75

500

6x − 3y = 12

y = 2x − 4