Answer:
10.3
Step-by-step explanation:
d = sqrt ((x2 - x1)^2 + (y2 - y1)^2)
(7,-2)....x1 = 7 and y1 = -2
(-2,3)...x2 = -2 and y2 = 3
now we sub
d = sqrt ((-2 - 7)^2 + (3 - (-2)^2)
d = sqrt ((-9^2) + (5^2))
d = sqrt (81 + 25)
d = sqrt (106)
d = 10.295 rounds to 10.3 <===
reduced
transformed the expression to make it easier
add
reduce
Subtract 295 from both sides:
Add 33x to both sides:
Divide both sides by 72:
y -3 = 2(x-4)
Use distributive property on the right side:
y - 3 = 2x -8
Add 3 to both sides:
y = 2x -5
The answer is A.
i) Because so that we can understand them steps by step
ii)We could enjoy when we study in school