Question

3. What is the slope of a line perpendicular to the line y =-2/3
x+12

Answer 1

Slope of line (i) = 1.5

Explanation:

• Line (i) is perpendicular to;

• Line (ii) whose equation is y =
  `-(2)/(3) x + 12`

The slope of line (ii) =
`-(2)/(3)`

* Mathematics rule: The product of slopes of two perpendicular lines = -1

∴ The slope of line (i) = -1 ÷
`-(2)/(3)` = 3/2 = 1.5