Cross multiply X×4=3×1
4x=3
X= 3/4
Remember that the slope of a line never changes, so you can choose whatever 2 points you want and you will always get the same slope. Calculate the rise and run (You can draw it on the graph if it helps). The slope is 2/4, which , of course, you can simplify to ½.
Answer:
FJH is an obtuse angle, so it is automatically larger than 90. Answer is D.