Determine in which direction the parabola below opens. y = 8x2 - 3x - 9
2 answers:
The parabola opens upward. because 8x^2 is positive
<span>y = ax^2 + bx + c
If a > 0, the parabola opens upwards <=
If a < 0, it opens downwards
</span><span>y = 8x^2-3x-9
y+9 = 8x^2-3x
y+9 = 8(x^2 -3/8 x)
y+9 = 8( x^2 - (2)(3/8)(1/2) x + (3/16)^2 -(3/16)^2 )
y+9 = 8(x-3/16)^2 - 8(3/16)^2
y+9 = 8(x-3/16)^2 -72/256
y = 8(x-3/16)^2 -9 -72/256
y= 8(x-3/16)^2 -297/32
Vertex : (3/16, -297/32)</span>
You might be interested in
Answer:
Second option, h=(
) ft
Step-by-step explanation:
Area = Base x Height
Height = Area ÷ Base
= 
= 
(split fraction for easier simplification)
= 
I think you have to add it or multiply it. I’m not sure
Answer:
An angle that turns through 1/360 of a circle is called a “one-degree angle,” and can be used to measure angles.
Answer:
(5 · x) + (8 · y) + (2 · 1)
Answer:
-8m+24-32n
Step-by-step explanation:
You simply multiply every number in the parenthesis by 8
(m-3+4n) * (-8)
-8 x m
-8 x -3
-8 x 4n
Hope this helps!
