Answer: Choice D) 7.21 units
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Work Shown:
Using the distance formula, we get
d = sqrt( (x2-x1)^2 + (y2-y1)^2 )
d = sqrt( (1-(-3))^2 + (-3-3)^2 )
d = sqrt( (1+4)^2 + (-3-3)^2 )
d = sqrt( (4)^2 + (-6)^2 )
d = sqrt( 16 + 36 )
d = sqrt( 52 )
d = 7.21110255 *** see note below ***
d = 7.21
Note: Use a calculator with a square root function. The value is approximate.