Graph the line using a point and a slope. Write the equation of each line. f a line that passes through the point (–1, –4) and whose slope is –2.
Mathematics · Middle School · Thu Feb 04 2021
Answered on
Given the points:
(-1, -4)
x1 = -1
y1 = -4
m = -2
Write the equation.
We cannot represent the graph, therefore we will only write the equation of the line.
The equation of the line can be written in point-slope form
Point-slope form:
y - y1 =m(x -x1)
Solution:
Substitute the given values of x1, m and y1 to the formula for the point-slope form.
y - (-4) = -2 ( x - (-1))
y + 4 = -2 ( x + 1 )
Final answer:
y + 4 = -2 ( x + 1 )