Point of Lamp (25, 15) lies on the graph of the equation 3y = kx + 20. the value of k is: 1 point
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Step-by-step explanation:
If (3,4) lies in the equation 3y=ax+7, then the must satisfy the equation of the line.
Thus, 3(4)=a(3)+7
⇒12=3a+7
⇒a= 3/5
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