Question

What is the equation of the line that passes through the point (8, 7) and has a slope
of 1?

Answer 1

x - y - 1 = 0

Explanation:

Using y-intercept

b = y - m × x

b = 7 - (1) × (8) = -1

y = mx + b/Flip expression, subtracting from all sides

assuming x ≠ 0 for x = 1

assuming y = 0

y = x - 1

x - y - 1 = 0