9514 1404 393
Answer:
C. 15
Explanation:
The distance formula can be used for this.
d = √((x2 -x1)² +(y2 -y1)²) = √((12 -0)² +(1 -10)²) = √(144 +81) = √225
d = 15
The distance between the points is 15 units.
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Alternate solution
You may recognize that the slope of the line is -3/4, suggesting that this is some multiple of a 3-4-5 right triangle. That multiple is 9/3 = 12/4 = 3, so the hypotenuse of the triangle is 5×3 = 15 units.