Answer:
The answer should B, only one makes sense
Obtuse because it all adds up to 180 degrees <span />
First you find 4/5 of 8 and then 4/5of 7 and multiply them
Answer:

Step-by-step explanation:

You plug in the point into each equation to see if the answer comes out equal. Such as the first one, so you have y=-3/4x+1. So you plug in the -4 for the x then plug in the -2 for y. So you get -2=1.1875, as you see both sides don't add up. As you progress in Algebra I'm guessing that you're in, you'll progress as the year goes on. So your answers are 3x-4y=-4 and y+2=3/4(x+4).