Hi.
16 + x + 21
Hope I was right in understanding your question.
we just need make inside square 0
x+10=0
x=-10
y-8=0
y=8
so the center is (-10,8)
D= it's is true because ox equals 3*2x
Answer:x=2, y=1, z=-1
Step-by-step explanation:
Given
2x+y+z=4----1
x-y+3z=-2----2
-x+y+z=-2----3
Add 2 & 3 we get
4z=-4
z=-1
Put value of z in 1 & 2
2x+y-1=4
2x+y=5----3
x-y+3(-1)=-2
x-y=1------4
add 3 & 4 we get
x=2
Put x & z in 1
y=1
pick any 2 points lets use:
(0,5) and (3,-7)
(y2-y1)/(x2-x1)
slope=(-7-5)/(3-0)=-12/3=-4
Answer is B. -4
