Answer:
7
Step-by-step explanation:
Two points P1 (x1,y1) and P2(x2,y2)
d=SQRT((x2-x1)^2+(y2-y1)^2))
choose your points
let (-3,0) be (x1,y1)
let (4,0) be (x2,y2)
Substitute the values into the equation
SQRT((4-(-3))^2+(0-0)^2))
Simplify
SQRT(7^2+0)
Square root of 7 squared is 7 or -7, however distance cannot be negative so the answer is 7
This applies to all two points however there is a faster solution for these two points as they have the same y value meaning you could've just drawn a line between these two points on a Cartesian plane and counted 7.