How do you write an equation of a line given (8, 13), m=-9?

1 Answer
Mar 21, 2017

See the entire solution process below:


We can use the point-slope formula to write and equation for the line described by the information in the problem:

The point-slope formula states: #(y - color(red)(y_1)) = color(blue)(m)(x - color(red)(x_1))#

Where #color(blue)(m)# is the slope and #color(red)(((x_1, y_1)))# is a point the line passes through.

Substituting the values from the problem gives:

#(y - color(red)(13)) = color(blue)(-9)(x - color(red)(8))#