The distance between point a and point d on the number line is 3.5 units.
What is distance?
Distance is the total movement of an object without taking direction into consideration. It is the space between two objects means how far two objects are located.
How to calculate distance?
We know that distance between two points [tex](x_{1} ,y_{1} ),(x_{2} ,y_{2} )[/tex] is [tex]\sqrt{(x_{2} -x_{1} )^{2} +(y_{2} -y_{1} )^{2} }[/tex].
Because the number line is horizontal so the y values should be zero because no such information is given.
Number line is a line which shows points on x axis.
Point A(-2,0) and point D (1.5,0)
Distance =[tex]\sqrt{(1.5+2)^{2} +(0-0)^{2} }[/tex]
=[tex]\sqrt{3.5^{2}+0}[/tex]
=[tex]\sqrt{3.5^{2} }[/tex]
=[tex]\sqrt{12.25}[/tex]
=3.5 units.
Hence the distance between point A and point D is 3.5 units.
Learn more about distance at https://brainly.com/question/2854969
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