Question 908035: Find the equation for the line that passes through (−1, −2) and (4, 3). Is the point (3, 1) on this line? Be sure to justify your answer.
Answer by MathLover1(20849)   (Show Source):
You can put this solution on YOUR website! the equation for the line that passes through (−1, −2) and (4, 3):
| Solved by pluggable solver: Find the equation of line going through points |
hahaWe are trying to find equation of form y=ax+b, where a is slope, and b is intercept, which passes through points (x1, y1) = (-1, -2) and (x2, y2) = (4, 3).
Slope a is  .
Intercept is found from equation  , or  . From that,
intercept b is  , or  .
y=(1)x + (-1)
Your graph:
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Is the point ( ,  ) on this line?
go to  or  and plug in  and  ; if left side of equation is equal to right side, than the point (, ) is on this line
 ...since  the point (, ) is NOT on this line
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