Question

A line passes through the point (-1, -7) and has a slope of -8.

Write an equation in slope-intercept form for this line.

Answer 1

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Answer:

y = -8x -15

Explanation:

It can be useful to start with the point-slope form when you are given a point and a slope.

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

For the given line, this equation is ...

y +7 = -8(x +1)

y = -8x -8 -7 . . . . eliminate parentheses, subtract 7

y = -8x -15 . . . . . slope-intercept form