Find the slope of the line that passes through (4, 1) and (6,4).
1 answer:
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You should have
on its own points to the point (2, -3) and lies on the line through this point and the origin. We capture all points on this line by scaling
by
. Then we add to
another vector that points to P(1, 1), which shifts the endpoint of all vectors on the line
to the line through P that runs parallel to
.
If 2x+y=5, then y=5-2x, so he substituted 5-2x correctly.
x+4x=5x, so he combined like terms correctly.
If 5x-10=10, then 5x=10+10 -> 5x=20, so he subtracted 10 from the right side instead of adding 10 to the right side.
The answer is C.
Here's the correct solution: