Question

Use the form y=mx +b for linear equations. Write the equation for the following relation. A = {(x, y): (1, 2), (2, 5), (3, 8), . . .}

Answer 1

#1 - 3, 1, 2

#2 - x+2y=4

#3 - y=3x-1

Answer 2

Write the matrix form of the function and solve:


`\left|\begin{array}{ccc}x&y&1\\1&2&1\\2&5&1\end{array}\right|=0\\ \\ 2x+2y+5-4-y-5x=0\\ \\ -3x+1+y=0\\ \\ \boxed{y=3x-1}`