Question

can someone show how two solve both questions 2 & 4? I couldn't understand the graph thing at all in class today

Answer 1

Ok, so

We're going to find the slope of the line that passes through the points:

The slope can be found using:

$m=\frac{y_2-y_1}{x_2-x_1}$

Where (x1,y1) and (x2,y2) are points of the line.

$m=\frac{2-0}{-3-2}=-\frac{2}{5}$