Question

Find the slope of the line that contains the points named.
P(1, 2), Q(3, 4) m

Answer 1

right, you use the formula
\[m=\frac{y_2-y_1}{x_2=x_1} = \frac{4-2}{3-1} = \frac{2}{2} = 1\]
where m is your slope (or gradient).

Answer 2

typo:
\[m = \frac{y_2-y_1}{x_2-x_1}\]

Answer 3

could you help me with this one also you think?

K(c + d, c - d), L(c - d, c + d) m =

Answer 4

\[m=\frac{y_2-y_1}{x_2-x_1} = \frac{c+d-(c-d)}{c-d - (c+d)} = \frac{2d}{-2d} = -1\]