Odpowiedź:
y=ax+b
A=( 3; 6), B=(-2; 4)
{6=3a+b
{4=-2a+b
{6=3a+b
{b=2a+4
6=3a+2a+4
-5a=-2
[tex]a = \frac{2}{5} [/tex]
[tex]6 = 3 \times \frac{2}{5} + b[/tex]
[tex]6 = \frac{6}{5} + b[/tex]
[tex]6 - \frac{6}{5} = b[/tex]
[tex] \frac{6}{1} - \frac{6}{5} = b [/tex]
[tex] \frac{30}{5} - \frac{6}{5} = b [/tex]
[tex]b = \frac{24}{5} [/tex]
odp.
[tex]y = \frac{2}{5} x + \frac{24}{5} [/tex]
