The green line have a slope of -3, hence the slope of the red line is -3.
What is a linear equation?
A linear equation is in the form:
y = mx + b
Where y,x are variables, m is the rate of change and b is the initial value of y.
Two lines are said to be parallel if they have the same slope.
Given that the red and green lines are parallel. The green line have a slope of -3, hence the slope of the red line is -3.
Find out more on linear equation at: https://brainly.com/question/14323743
