Gradient of parallel and perpendicular lines

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• nothing

• Perpendicular

• Parallel

• Neither parallel nor perpendicular

A is the point (-2, 0) and B is the point (0, 4).

Find the equation of the straight line joining A and B.

• $y=-2x+4$

• $y=2x+4$

• $y=2x-4$

Find the gradient:

• 3/4

• 4/3

• -3/4

• -4/3

Does gradients have any units?

• Yes

• No

The gradients of parallel lines are...

• the same

• opposite

• always different

What is the y-intercept of the line
y = 4x - 6?

• 4
• 4x
• 6
• -6