parallel when a=2
perpendicular when a=-1/2
Yo sup??
y=(x+4)(x-2)
to find the x intercept put y=0
0=(x+4)(x-2)
so either x=-4 or x=2
Therefore the graph intersects the x axis at -4 and 2
Lenght of x intercept=|-4-2|=6 units
y=(x+4)(x-2)
=x^2+2x-8
This is an upward opening parabola
To find the coordinates of the vertex we can apply the formula
(-b/2a,-D/4a)
b=2
a=1
D=b^2-4ac
=4-4*1*(-8)
=4+32=36
Vertex=(-2/2*1,-36/4*1)
=(-1,-9)
Hope this helps.
First, turn 
into an improper fraction with a denominator of 4, which matches 
.
Now, just add the numerators.
= 318
And the calculator can help you on problems like this
Hope That Helped =D
The distance bewtween -12 and 19 is 31
and -2 -7 is 5
and then 25 and -1 is 26
