Question

Lindsay used two points, (x1, y1) and (x2, y2), to find the equation of the line, y = mx + b, that passes through the points. First, she used the definition of slope and determined that the value of m is y 2 - y 1 / x 2 - x 1 . Given this information, which expression must represent the value of b?

Answer 1

Yo

we know that

y=mx+b

b=y-mx

the equation of line passes through (x1,y1) hence should satisfy the equation of line

b=y1-mx1

the value of m=y2-y1/x2-x1

hence

b=y1-(y2-y1/x2-x1)x1

correct answer is option A

Hope this helps

Answer 2

ok first of all!! the answer is a!! :D also!!!!

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