Final answer:
The equation of the line passing through the points (4,5) and (1,2) is found by calculating the slope and then expressing the equation in slope-intercept form, resulting in y = x + 1.
Step-by-step explanation:
To develop the line equation for the points (4,5) and (1,2), we follow these steps:
- Calculate the slope (m) using the formula m = (Y2 - Y1) / (X2 - X1), where (X1, Y1) and (X2, Y2) are the given points.
- Use one of the points and the slope to write the equation in point-slope form, which is y - y1 = m(x - x1).
- Rearrange the equation to slope-intercept form, y = mx + b, where b is the y-intercept.
Now, let's calculate:
- Slope calculation: m = (5 - 2) / (4 - 1) = 3 / 3 = 1
- Point-slope form: Using point (4,5), the equation is y - 5 = 1(x - 4)
- Slope-intercept form: Simplifying the above equation gives us y = x + 1
The equation of the line is y = x + 1.