
The equation of a elipse:

The length of the major axis is equal 2a if a > b or 2b if b > a.
We have

therefore the length of the major axis is equal 2 · 7 = 14.
Answer:
1st one and the third one
Step-by-step explanation:
25(0)=25
25+0=25
Answer:
y = - 10x
Step-by-step explanation:
The equation representing a proportional relationship is
y = kx ← k is the constant of proportionality
y = - 10x ← is the only equation in this form
Thus the equation is y = - 10x with k = - 10
There are 7 tens, so i want to say 10^7
10 to the seventh power
Part A: the x-cordinates of where the graphs of the equations intercept are solutions because they make each side of the equation equal to the same value, making them equal. Basically, both functions put out the same value at that point x, making them equal.
Part B: See the attached image. From the tables we can see that both equations have the same output at x=-2, so that is where the graphs would intersect and that would be the solution. They both put out .0625 at x=-2
Part C: You can solve the equation 4^x=2^(x-2) graphically by plotting both sides of the equation as separate functions. In your graphing calculator, you would plot y=4^x and y=2^(x-2), and see at what x-value they intersect to find the solution