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B) Write an equation of the line that crosses the graph of f(x) at x=-1 and x=2​

User Retozi
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Answer:

Explanation:

let it passes through (-1,y1) and (2,y2)


slope=(y2-y1)/(x2-x1) =(y2-y1)/(2-(-1)) =(y2-y1)/(3) \\eq. ~of~line~is~\\y-y1=(y2-y1)/(3) (x+1)\\3y-3y1=xy2-xy1+y2+y1\\3y=(y2-y1)x+y2+4y1

User Clara
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