Y=a(x-h)²+k
x=h is the axis of symmetry
so
-4y=x²
times both sides by -1/4
y=(-1/4)x²
y=(-1/4)(x-0)²+0
axis of symmetry is x=0
3rd option
Answer:
A
Step-by-step explanation:
since both equations express y in terms of x we can equate the right sides
x + 7 = - 2x + 19 ( add 2x to both sides )
3x + 7 = 19 ( subtract 7 from both sides )
3x = 12 ( divide both sides by 3 )
x = 4
substitute x = 4 into either of the 2 equations for y
y = x + 7 ⇒ y = 4 + 7 = 11
solution is (4, 11 )
240 minutes is how many minutes she went hiking
1 hour=60 minutes so
60×4=240
The answer is A. v + 168 = t
