What is a perpendicular line

its is a line that intersects another line at 45 degree angle

ex. lines with the slope of 2/3 and -3/2 are perpendicular cause they intersect leaving a 45 degree angle

Step-by-step explanation:

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.