Answer:
Step-by-step explanation:
B
Y=7-3x
Y=10 if x=-1
1-*7-3
=10
Vertex
Vertex is the 'point' of an angle
x+3
sqrt(x^2+6x+9)
factor
We know this is a perfect square trinomial
sqrt(( x+3)^2)
Taking the square root of a square
