Step 1 :Given two points $(-1,-6)$ and $(5,3)$, we want to find the equation of the line that passes through these points.
Step 2 :We start by finding the slope of the line using the formula (y2 - y1) / (x2 - x1). Substituting the given points into the formula, we get \((3 - (-6)) / (5 - (-1)) = 1.5\). So, the slope of the line, m, is 1.5.
Step 3 :Next, we use the point-slope form of a line, which is y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line. Substituting the slope and one of the points into the formula, we get y - (-6) = 1.5(x - (-1)). Simplifying this equation, we get y = 1.5x + 6 + 1.5 = 1.5x + 7.5.
Step 4 :However, we know that the y-intercept, b, is -4.5. So, the final equation of the line is y = 1.5x - 4.5.
Step 5 :Final Answer: The equation of the line that passes through the points $(-1,-6)$ and $(5,3)$ is \(\boxed{y = 1.5x - 4.5}\).