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8th Grade Mathematics Name___________________________________ ©Q `2`0i1o5Q PKZuktcan MShohfBtzwXaWrzeH bLvLSCq.h _ AAsl^lV ZrCiWgRhGtass SrpeZsreqrAv\eTdM. Substitution- C (Neither equation solved for y) Period____ Calculator #______ Solve each system by substitution. 1) x + 5 y = -15 -2 x + 5 y = 0 2) x + 3 y = 7 -3 x + 7 y = -21 3) 2 x - 2 y = -18 -5 x + y = 21 4) 6 x - 2 y = 6 -3 x + y = -3 5) -3 x - 8 y = -16 x - 6 y = -12 6) -5 x + y = -6 5x - y = 2 7) x + 5 y = 8 -3 x - 15 y = -4 8) -3 x - 3 y = 12 -4 x + y = 6 9) x - 6 y = -13 -3 x - 6 y = 15 10) -4 x + 3 y = 18 x + 8 y = 13 Worksheet by Kuta Software LLC -1- ©O e2p0s1Z5h ^Klu`tlag \SdoqfXt_wnaWr]eh nLbLgCS.c g zAIlqlu lr\ibgThztqs` Erse_sUenrtvaendU.y e UMgaCdteh EwDihtwhJ ]IynJfjirnVictIe\ uANlNgseFbNrSa` _1r. 11) - x - 3 y = 9 -8 x - 6 y = -18 12) 6 x + 4 y = -6 7 x + 2 y = -15 13) -3 x + 6 y = -6 3x - 6 y = 6 14) -3 x + 6 y = -6 2x - 7 y = 4 15) 6 x - 3 y = 9 8x - 5 y = 9 16) 4 x - 12 y = 8 -2 x + 6 y = 0 17) -7 x - 4 y = 21 -8 x - 3 y = 24 18) -4 x + 3 y = 17 y = -5 19) 3 x - 6 y = 15 9 x - 18 y = 45 20) -3 x - y = 6 -3 x - 3 y = 18 Worksheet by Kuta Software LLC -2- ©` D2v0i1e5r NKwuktmaR CS_ocfdtxw`ahrsek zLVLxCF.m E EApl_lU VrjisgShmt^sO wrgewsBearfvNekd[.r x ]MPa^dtea GwHi`tghH mIvnRfOiCnkintpex zAilNg`eObXryam K1^. 8th Grade Mathematics Name___________________________________ ©A ^2o0v1d5O ZKouvtzaZ CSboYfftlwEayr\eu aLQLkCP.Z L vAalUlv vreilgbhEtKsq Tr_eHs^elrdvHeHdr. Substitution- C (Neither equation solved for y) Period____ Calculator #______ Solve each system by substitution. 1) x + 5 y = -15 -2 x + 5 y = 0 2) x + 3 y = 7 -3 x + 7 y = -21 (-5, -2) (7 , 0) 3) 2 x - 2 y = -18 -5 x + y = 21 4) 6 x - 2 y = 6 -3 x + y = -3 (-3, 6) 5) -3 x - 8 y = -16 x - 6 y = -12 Infinite number of solutions 6) -5 x + y = -6 5x - y = 2 (0, 2) 7) x + 5 y = 8 -3 x - 15 y = -4 No solution 8) -3 x - 3 y = 12 -4 x + y = 6 (-2, -2) No solution 9) x - 6 y = -13 -3 x - 6 y = 15 10) -4 x + 3 y = 18 x + 8 y = 13 (-7, 1) (-3, 2) Worksheet by Kuta Software LLC -1- ©B Y2m0E1Y5a AKwu_taa\ PSWogfAtJwEaardeO nLCLgC_.P ` JAOlvlN Xr\ikgihkt\sx vrxeLsweZrevkeldG.S ` aMSaidfeb JwaiCtOhQ rITnZfGisnCi]txeK HAslvgpeybXrxac X1X. 11) - x - 3 y = 9 -8 x - 6 y = -18 12) 6 x + 4 y = -6 7 x + 2 y = -15 (6, -5) 13) -3 x + 6 y = -6 3x - 6 y = 6 (-3, 3) 14) -3 x + 6 y = -6 2x - 7 y = 4 (2 , 0) Infinite number of solutions 15) 6 x - 3 y = 9 8x - 5 y = 9 16) 4 x - 12 y = 8 -2 x + 6 y = 0 (3, 3) 17) -7 x - 4 y = 21 -8 x - 3 y = 24 No solution 18) -4 x + 3 y = 17 y = -5 (-3, 0) 19) 3 x - 6 y = 15 9 x - 18 y = 45 (-8, -5) 20) -3 x - y = 6 -3 x - 3 y = 18 (0, -6) Infinite number of solutions Worksheet by Kuta Software LLC -2- ©a K2O0W1j5U wKHuQtXav FSMolfvtEwOarrOeC LLwLVCF.C V aAClQld krxiagQhWtQs` jrZefsDelrPvueCdx.w U cMgazdneo ]wgiUtYhc TI\nvfViLneiatkeh RA]l`gaeqberqaE U1L.