The slope should be one over two.
-1584.
multiply 42 times 42 the subtract that from 180
Well what you want is y = mx + b
m = slope
b = intercept for y
with that just substitute in the slope and the intercept, but leave the x and y as it is. So later on you can put in a x coordinate and get the y coordinate through that, hope this helps!
A = < 90°
the measure of the angle is less than 90
