Mohd Noor Abdul Hamid, Ph.D

1. CONSTANT FUNCTION• a function whose values do not vary and thus are constant

Eg 1: y = 5

Domain = { x ε R }-∞ +∞

5

Range = { y = 5 }

1. CONSTANT FUNCTION• a function whose values do not vary and thus are constant

Eg 2: x= 50

Domain = { x = 50 }

Range = { y ε R }

50

+∞

-∞

2. LINEAR FUNCTION

• a first degree polynomial function of one variable

y = f(x) = mx + c

slope / gradient y-intercept

• graph : straight lines.

- skewed to the left m < 0

- skewed to the right m > 0

2. LINEAR FUNCTIONExample 1 : y = 2x + 4

-∞ +∞Domain = { x ε R }

+∞

-∞

Range = { y ε R }

2. LINEAR FUNCTIONExample 1 : y = -5x + 10

-∞ +∞Domain = { x ε R }

-∞

+∞

Range = { y = R }