SOLUTION: find the slope, if it exists, of the line containing the pair of points (-10,-12) and (-17,-19)

Algebra ->  Graphs -> SOLUTION: find the slope, if it exists, of the line containing the pair of points (-10,-12) and (-17,-19)      Log On


   

Question 379112: find the slope, if it exists, of the line containing the pair of points
(-10,-12) and (-17,-19)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Using the point-slope formula, m+=%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29

(-10,-12) and (-17,-19)

m = -19-(-12) / -17-(-10) = -7/-7 = 1

m = 1

the standard slope-intercept form for an equation of a line y = mx + b  

where m is the slope and b the y-intercept

equatin of this line

y = 1*x + b  using ordered pair(-10,-12) to solve for b

-12 = -10 + b

-2 = b

y = x -2  is the equation of the line