Answer:
y=3x+2
Step-by-step explanation:
3x - y = -2
-3x -3x
_________
-y = -3x-2
/-1 /-1
_________
y = 3x+2
Answer:

Step-by-step explanation:
Point slope form is: 

We are given the slope of
and the point of (8,4).
Replace 'm' with -5/6, 'x1' with 8, and 'y1' with 4.

I do not see any options that match this, but the boxed equation should the correct answer.
Answer:
its A. 7
Step-by-step explanation:
Answer:
(x+a)²-7=x²+10x+b
simplifying,we get
x²+2ax+a²-7=x²+10x+b
the coefficient of x on both sides should be equal
therefore
2a=10
a=10/2=5
also for b
a²-7=b
5²-7=25-7=b
b=18
a=5
Answer:
10 feet.
Step-by-step explanation:
I am assuming this is a right triangle. We use Pythagoras theorem:
h^2 = 6^2 + 8^2
h^2 = 100
h = 10 feet.