Question

Writing an Equation Using Slope-Intercept Form
Use point-slope form, y - y1 = m(x - x1), to find the linear equation of a line that passes through the points
(2, -1) and (10, 7).

y =
x
+

Answer 1

Slope m = (7 - (-1)) / (10 - 2) = 8/8 = 1.
Use point-slope with (2, -1): y - (-1) = 1(x - 2) → y + 1 = x - 2 → y = x - 3.