Both the slopes and the y-intercept are same therefore both lines are the same and will
intersect at every point on either line
Formulas
The formula for a line is y = mx + b where
x
and
y are coordinates, m is the slope, and
b
is the y-intercept. So to calculate the point where the lines intersect we substitute and
get
y = m1x+b1 = m2x+b2 x = (b1-b2)/(m2-m1) y = x*m1+b1 = x*m2+b2