Answer:
[tex]m=-\frac{1}{6} \approx -0.1667[/tex]
[tex]M=(1,\frac{17}{2} )=(1,8.5)[/tex]
[tex]d=\sqrt{37} \approx 6.083[/tex]
Step-by-step explanation:
(i) For two different points on a line, the slope m is defined as the difference on the y-axis divided by the difference on the x-axis:
[tex]m=\frac{\Delta y}{\Delta x} =\frac{y_2-y_1}{x_2-x_1}[/tex]
Where:
[tex](x_1,y_1)=(-2,9)\\\\(x_2 , y_2)=(4,8)[/tex]
So:
[tex]m=\frac{8-9}{4-(-2)} =\frac{-1}{6} \approx -0.1667[/tex]
(ii)
To find the coordinates of the midpoint, you can use the following formula:
[tex]M=(\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )[/tex]
Therefore:
[tex]M=(\frac{-2+4}{2} , \frac{9+8}{2} )=(\frac{2}{2} , \frac{17}{2} ) =(1,8.5 )[/tex]
(iii) The distance between two points is given by the following formula:
[tex]d=\sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2} }[/tex]
Hence:
[tex]d=\sqrt{(4-(-2))^{2}+(8-9)^{2} } =\sqrt{(6)^{2}+(-1)^{2} } =\sqrt{36+1} =\sqrt{37} \\\\d\approx 6.083[/tex]
