First: find slope: m = ( y2 - y1 ) / ( x2 - x1 ) x1 = -4 y1 = 5 x2 = 1 y2 = 0
m = ( 0 - 5 ) / ( 1 - -4 )
m = -5 / 5
m = -1
Use point-slope form: y - y1 = m( x - x1 )
y - 5 = -1( x - -4 )
y - 5 = -1( x + 4 )
y - 5 = -x - 4
y = -x + 1
[Your English is fine!]