Question

The slope of the line below is 2. Use the coordinates of the labeled point to

find a point slope equation of the line.
10
(1.9)
O A. y-9--2(x - 1)
B. y + 9 --2(x+1)
C. - 9. 2(x - 1)
D. y + 9 + 2(x + 1)

Answer 1

A. y -9 = 2(x -1)

Explanation:

The point-slope form of the equation of a line is ...

y -k = m(x -h) . . . . . line with slope m through point (h, k)

You are given m=2 and (h, k) = (1, 9). Putting these values into the form gives ...

y -9 = 2(x -1)