SOLUTION: The slope of the line that contains the points (-2, -1) and (3, 19) is 4. Find the y-intercept. Is it: A. -7, B. -2, C. 2, Or D. 7

Algebra ->  Equations -> SOLUTION: The slope of the line that contains the points (-2, -1) and (3, 19) is 4. Find the y-intercept. Is it: A. -7, B. -2, C. 2, Or D. 7      Log On


   

Question 1153789: The slope of the line that contains the points (-2, -1) and (3, 19) is 4. Find the y-intercept.
Is it:
A. -7,
B. -2,
C. 2,
Or
D. 7
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
y=mx%2Bb----------------------y-intercept is b.
y-mx=b
b=y-mx


b=-1-4%28-2%29
b=-1%2B8
highlight%28b=7%29


-

Do those two given points really hae slope 4?
%2819-%28-1%29%29%2F%283-%28-2%29%29
20%2F5
4
yes