Straight Lines

Question 1

What is the equation of a line perpendicular to y = 3x + c ?

Answer 1

y = -1/3x + c

Question 2

What is the relationship between two perpendicular lines?

Answer 2

One is the negative reciprocal of the other. (e.g. 2 and -1/2)

Question 3

What is the equation of a line?

Answer 3

y = mx + c

Question 4

In the equation y = mx + c, what does the c mean?

Answer 4

The y-intercept

Question 5

In the equation y = mx + c, what does the mx mean?

Answer 5

The gradient

Question 6

Rearrange 4y - 8 = 2x to be in the format y = mx + c

Answer 6

[ 4y - 8 = 2x ]
/4
[ y - 2 = 1/2x ]
+2
[ y = 1/2x + 2 ]