Answer:
2a=1
Step-by-step explanation:
The constant difference for a hyperbola
is 
1. Since hyperbola has foci (-3.5, 0) and (3.5, 0), then
Note that
then

2. Since point (3.5,24) lies on the hyperbola, then

3. Solve the system of two equations:

From the 1st equation,

then

For 
For
this is impossible, then
is extra solution.
Hence,
and 
Answer:
Check attachment below
Step-by-step explanation:
To do this :
we know the graph will cross the y axis at -9 (because of the y-intercept)
And we can work out the x-intercept by making y=0 and solving for x.
This gives us 15
Check graph below for the answer
Answer:
y=-7
Step-by-step explanation:
y-y1=m(x-x1)
y-(-7)=0(x-5)
y+7=0
y=0-7
y=-7
Take 60 divided by 4 to get 15 simple enough to get this answer just type it in or get a family member to help
Answer:
The answer to #7 is -4
Step-by-step explanation:
-2(x-3y)
-2( (-4) - 3(-2) )
-2 (-4+6)
-2(2)
-4