Since these are parabolas with y being squared, the standard form of such a parabola with vertex at (h, k) is
<span>x = a(y - k)^2 + h </span>
<span>There are no steps. Just look at what is inside the parentheses and compare it to (y - k) with k = -3. </span>
<span>Then look at what is added and compare it to h = -1. </span>
<span>For instance, A has (y + 1) in parentheses. So k = -1. And it has -3 added, so h = -3. That would be a vertex at (-3, -1).</span>
Area of a rectangle=length×width. If the area is 161 and the length is 14 then that means: 161=14×width. You would then divide 161÷14 and you will find that the width is 11.5.
Answer:
Step-by-step explanation:
You basically minus the x's
Then get your equation e.g a +b+c=.....
Then find x on its own e.g 2x=4
X= 2
Answer:
±1. ±2,±4, ±1/2, B
Step-by-step explanation:
list the factors of 4 over the factors of 2
1 ,2 ,4 , -1 ,-2, -4
--------------------------
1,2 -1,-2