<span>f(0)=-3(0)²+10=3*0+10=0+10=10</span>
Линейные:б,д
график б: k=0, b=-1
график д: k=3, b=0
1/3х=12 2/3у=9 -4х=1/7 5у=-5/8 1/6у=1/3 2/7х=0
х=12:1/3 у=9:2/3 х=1/7:(-4) у=-5/8:5 у=1/3:1/6 Корней нет
х=36 у=13 1/2 х=-1/28 у=-1/8 у=1/3
<span>3(5-4а)-(12а-7)= 15 -12а -12а+7 = 22-24а = 22 -24 * 0,5 = 22- 12 = 10
</span><span>6(3а+5)-(17+2а) = 18а +30 -17-2а = 16а + 13 = 16 *(-0,25) +13 = -4+13 = 9
</span>
7(4+с)-(3с-5) = 28 +7с - 3с+ 5 = 33 +4с = 33 +4*(-<u />) = 33 -3 = 30