Solution:
(1) Midpoint:
A point in the middle of the line segment that divides it into two equal parts.
Mid point formula:

Middle of a segment; in the form of a coordinate plane.
(2) Slope:
To find the slope of the line when passing through two points.
Slope formula:

(3) Distance:
To find the distance of two points.
Distance formula:

Answer: 1.5
Step-by-step explanation:
1.92-0.42=1.50
1.50+0.42=1.92
Decimal form would be 2.7 and -0.2... exact form is 5 + square root 33 over 4