Y=a(x-h)^2+k
-5=a(1-0)^2+2
-5=a+2
-3=a
y=-3x^2+2
Answer:
Option A
Step-by-step explanation:
The complete question is shown in the attachment.
The sum of angles in a triangle is 180 degrees.
This implies that:

m<A+138=180
m<A=180-138=42
Now we use the sine rule to find AC=b

This implies that:


2xy^2 + 8y => 2y ( xy +4)
Answer:
y=-1x+8
Step-by-step explanation:
y=mx+b
m=slope
b=y-intercept