Answer:
Slope m = 1/-2
Step-by-step explanation:
Given the formula for slope of a line to be
m = y - y_1 / x - x_1
Only if a point is given
But in this case, we are given two points
( 1 ,4 ) and ( -1 , 5)
x_1 = 1
y_1 = 4
x_2 = -1
y_2 = 5
Inserting the values given into the formula
m = y_2 - y_1 / x_2 - x_1
m = 5 - 4 / -1 - 1
= 5 - 4= 1
= -1 - 1 = -2
m = 1/ -2
Therefore, the slope of the line is 1 /-2
