SOLUTION: The slope of the line that contains the points (4, 10) and (5, 13) is 3. Find the y-intercept

Algebra ->  Linear-equations -> SOLUTION: The slope of the line that contains the points (4, 10) and (5, 13) is 3. Find the y-intercept      Log On


   

Question 428225: The slope of the line that contains the points (4, 10) and (5, 13) is 3. Find the y-intercept
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
You can express the equation as
+y+=+mx+%2B+b+
+y+=+3x+%2B+b+ (b is the y-intercept)
Just plug in one of the points
(4,10)
10+=+3%2A4+%2B+b+
+b+=+10+-+12+
+b+=+-2+ (answer)
Here's a plot:
+graph%28+400%2C+400%2C+-5%2C+5%2C+-5%2C+5%2C+3x+-+2%29+