Question
A line has gradient 5.
M and N are two points on this line.
M is the point (x, 8) and N is the point (k, 23).
Find an expression for x in terms of k.
x = ………………..
Answer/Explanation
Ans:
k – 3 or -3 + k
Question
Find the equation of the line passing through the points (0, –1) and (3, 5).
Answer/Explanation
Ans:
y = 2x − 1
Question
The point A has co-ordinates (–4, 6) and the point B has co-ordinates (7, –2).
Calculate the length of the line AB.
Answer/Explanation
Ans: 13.6 or 13.60…..