Question

Write an equation of a line that is perpendicular to y=-2/5x -1 and passes through the point (2,8)?

Answer 1

The equation of the straight line is expressed generally as; y = mx + c

If two straight lines are perpendicular; the slope of one line (m1) is equal to negative reciprocal of the second line(m2)

That is

`m_{1_{}}=-(1)/(m_2)`

The equation of the line y= -2/5x -1