Linear Functions and Linear Equation System in Two Variables

From the diagram, negative gradient are shown by …

• p and t

• q and r

• s and t

• r and u

The correct statement are ...

• Gradient of line b Zero

• Gradient of line c Positive

• Gradient of line e Negative

• Gradient of line f Undefined

Line having gradient equals 2/3 is shown by ….

• a

• b

• c

• d

Gradient of line d is …

• 5/3

• 5/6

• -5/6

• -5/3

The gradient of linear function y=3x+4 is ….

• 1

• 3

• 4

• -3

The gradient of linear function y=-1/3x-6 is ….

• -3

• -1/3

• 1/3

• -6

Gradient of 3x+2y=12 is ….

• 2

• 3

• 3/2

• -3/2

Gradient of 4x-y=8 is ….

• 4

• -4

• -8

• 8

Notice the following linear functions

(i) y=3x+2y
(ii) y=−3x+5
(iii) y=6−3x
(iv) y=−7+3x
Linear functions having gradient −3 are shown by ….

• (i) and (ii)

• (i) and (iii)

• (ii) and (iii)

• (ii) and (iv)

Gradient of straight line passing through points (3, -2) and (3, 4) is ….

• 6

• -6

• 0

• (undefined)