SOLUTION: line passes through the points (-10,-4) and (-1,2) What is the y-intercept of the line

Algebra ->  Human-and-algebraic-language -> SOLUTION: line passes through the points (-10,-4) and (-1,2) What is the y-intercept of the line       Log On


   

Question 850195: line passes through the points (-10,-4) and (-1,2)
What is the y-intercept of the line
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Slope is m=%282-%28-4%29%29%2F%28-1-%28-10%29%29=6%2F9=2%2F3;
Keeping as y=mx%2Bb form, solve for b gives b=y-mx.
Use either point, trying (-1, 2) to solve for the value for b.
b=2-%282%2F3%29%28-1%29
b=2%2B2%2F3
highlight%28b=2%262%2F3%29--------THIS IS THE y-INTERCEPT.