Select one:
a. y=4.2x−13.44y=4.2x−13.44
b. y−2.2=4.2(x−4.2)y−2.2=4.2(x−4.2)
c. y−4.2=4.2(x−2.2)y−4.2=4.2(x−2.2)
d. y+4.2=4.2(x+2.2)
Write an equation in point-slope form of the line having the given slope that contains the given point. m=4.2,(2.2,4.2)?
2016-07-20 8:11 pm
回答 (2)
2016-07-20 8:16 pm
✔ 最佳答案
Let (x, y) be a point on the line.The slope of the line :
(y - 4.2) / (x - 2.2) = 4.2
y - 4.2 = 4.2 (x - 2.2)
...... The answer is: c. y - 4.2 = 4.2 (x - 2.2)
2016-07-20 8:18 pm
y-4.2 = 4.2(x-2.2)
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