186k views
21 votes
Write the equation of the line in slope-intercept form that goes through the points: (0, 5) and (4, 5)

User Mikael S
by
3.6k points

1 Answer

14 votes

Answer:

Explanation:

The equation of a line written in slope-intercept form should be written as : y = mx + b

where m is the slope and b is the y-intercept.

We can find the slope, m, using the 2 points given:

(y2 - y1) / (x2 - x1) = (-12 -6) / (5- -4)

m= -18/9

m = -2

Then we can use this slope and one of the two points to find the intercept. Either point is fine but let's use (-4 , 6):

y = -2x + b

6 = -2 * -4 + b

6 = 8 + b

6-8 = 8 + b -8

-2 = b

The final equation of the line is: y = -2x -2

User Dmitry Shvetsov
by
3.9k points