Respuesta :
Step-by-step explanation:
First thing you do is fine gradient. To do this use the formula:
[tex] \frac{y 1 - y2}{ x1 - x2} [/tex]
[tex] \frac{9 - 11}{8 - 3 } = \frac{ - 2}{5} [/tex]
Then use this formula to find equation of the line:
y = mx + c where m is the gradient
Then Substitute in a point and the calculated gradient value to get c
11 = -0.4 x 3 + c
c = 12.2
Therefore the equation of the line is:
y = -0.4x + 12.2
