I'll find the slope of the first function
slope = (-3 - 0) / (3 - 0.5)
slope = -3/2.5 = -6/5
Equation
y - y1 = m(x - x1)
y + 3 = -6/5(x - 3)
y + 3 = -6/5x + 18/5
y = -6/5x + 18/5 - 15/5
y = -6/5x + 3/5
The second option is the correct one.
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