Heloł heloł
[tex]\left \{ {{7=26a+b/*(-1)} \atop {15=-6a+b}} \right. \\\left \{ {{-7=-26a-b} \atop {15=-6a+b}} \right. \\8=-32a\\a=-\frac{1}{4} \\15=-6a+b\\15=-6*(-\frac{1}{4} )+b\\15=\frac{3}{2} +b\\b=\frac{27}{2} =13\frac{1}{2} \\y=-\frac{1}{4} x+13\frac{1}{2}[/tex]
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Heloł heloł
[tex]\left \{ {{7=26a+b/*(-1)} \atop {15=-6a+b}} \right. \\\left \{ {{-7=-26a-b} \atop {15=-6a+b}} \right. \\8=-32a\\a=-\frac{1}{4} \\15=-6a+b\\15=-6*(-\frac{1}{4} )+b\\15=\frac{3}{2} +b\\b=\frac{27}{2} =13\frac{1}{2} \\y=-\frac{1}{4} x+13\frac{1}{2}[/tex]