Question

Find the value of y so that so that the line passing through (4, y) and (5, 3) has a slope of 1.

Answer 1

\[slope = \frac{y2-y1}{x2-x1} = 1\]
\[= > \frac{3-y}{5-4} = 1\]
\[= > \frac{3-y}{1} = 1\]
\[= > 3-y = 1\]
\[= > y=2\]

Answer 2

thank you @ganeshie8