Question

What is the value of p such that the line passing through (6,2) and (9,p) has a slope of -1?

Answer 1

p= -1

Explanation:

gradient=y²-y¹

x²-x¹

-1 =p-2

9-6

-1=p-2

3

multiply both sides by 3 to remove the denominators

-1×3=p-2

-3=p-2

put the like terms together

-3+2=p

-1=p