Question

find the value of x if the distance between the points a(0,0) and b(x,-4) is 5 units

Answer 1

Answer:

±3

Step-by-step explanation:

Let X1=0 and Y1=0 while X2=x and Y2=-4

Using distance formula:

distance²=(X1-X2)²+(Y1-Y2)²

given distance= 5 units

5²=(0-x)²+(0-(-4))²

25=(-x)²+4²

x²=25-16

x²=9

x=±3

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