Find the possible values for a if the points with the given coordinates are indicated distance apart.

question 31. (-9, -2), (a, 5); d=7

Step-by-step explanation:

The distance between two points can be calculated with the formula:

Knowing that the poins are (-9, -2) and (a, 5),  and the distance between these two points is 7, you can substitute values into the formula and solve for "a":

Square both sides of the equation:

Remember that the Square of a binomial is: .

When a quadratic is the square of a binomial, then the roots are equal.  This is called "Double root".

Therefore:

2 is the final ! : )

30005

yes ok