Which transformations map the strip pattern onto itself?
a horizontal translation only
a horizontal translation and a 180 rotation
a horizontal translation and a glide reflection
a horizontal translation and a reflection across a vertical line

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.