Respuesta :

Line equations always follow the formula
y = mx + b
m is the coefficient of x
m also represents the slope
b is the y intercept (where the line crosses the y axis)

If the coefficient of x is -3, then the slope (gradient) is also -3

-3
y = mx + b

Where 'm' is the slope and 'b' is the y-intercept. 

y = -3x + 8

Answer:  -3 is the slope.