I don't know what the "lowest y-intercept means" so if you can reiterate and clarify I'd appreciate it, but if you understand what you're looking for then I assume that a graph would be helpful. An online useful graphing site I like is desmos. Hope I helped.
Answer:
First do the Base multiplied by the Height.
After divide by 2
Step-by-step explanation:
z=-3
Step-by-step explanation:
So hmm notice the picture below
that's (0, -3)
now, keep in mind, adjacent is 0, opposite is -3, and hypotenuse, or radius, is 3
and recall