Answer: Memorize the formula
Step-by-step explanation:
( x / a )^2 - ( y / b )^2 = 1
Where a and b are the semi-axis
The value of a is half the distance from points that cuts off x-axis, in this case
From -5 to 5 there is 10 so 5 is value of "a"
Value of b can find by the formula
c^2 = a^2 + b^2
Which c is the value of the point bold on the rightmost place in x axis. In this case its 13
13^2 = 5^2 + b^2
169 = 25 + b^2
b = 12
SO we got a = 5, b = 12
ANSWER: (x/5)^2 - (y/12)^2 = 1
