Question 7: A,b,c pleaseQ11: a,b,c pleaseQ15: a,b pleaseOn paper please. al linearear sys-s in thementede lin-aus 1.1 Introduction to Systems of Linear Equations 911. In each part, solve the linear system, if possible, and use theresult to determine whether the lines represented by the equa-tions in the system have zero, one, or infinitely many points ofintersection. If there is a single point of intersection, give itscoordinates, and if there are infinitely many, find parametricequations for them.a. 3x - 2y = 46x - 4y = 9b. 2x - 4y = 14x-8y = 2c. x-2y = 0x - 4y = 812. Under what conditions on a and b will the linear system haveno solutions, one solution, infinitely many solutions?2x - 3y = a4x - 6y= bIn each part of Exercises 13-14, use parametric equations to describethe solution set of the linear equation.13. a. 7x - 5y = 3b. 3x₁5x₂ + 4x3 = 7c. -8x₁ + 2x₂5x3 + 6x4 = 1d. 3v8w + 2xy + 4z = 0b. x₁ + 3x₂ - 12x3 = 3c. 4x₁ + 2x₂ + 3x3 + x4 = 20d. v+w+x - 5y +7z=0In Exercises 15-16, each linear system has infinitely many solutions.Use parametric equations to describe its solution set.15. a. 2x-3y = 16x9y = 3x3 = -4b. x₁ + 3x₂3x₁ + 9x₂ 3x3 = -12-x₁3x₂ +x3 =42xy + 2z = -46x3y + 6z = -1214. a. x+10y = 216, a. 6x₁ + 2x₂ = -8b. U-130-9000-21In each part of Exercises 7-8, find the augmented matrix for the lin-ear system.7.a. - 2x₁ = 6b. 6x₁ - x₂ + 3x3 = 43x₁ =1 85x₂ -X3 = 19x₁ = -3C.2x2-118.- 3x4 + x₂ = 0= -16- 3x₁-x₂ + x36x₁ + 2x₂x3 + 2x4 - 3x5 =b. 2x₁a. 3x₁2x₂ = -1+ 2x3 = 14x₁ + 5x₂ =33x₁ - x₂ + 4x3 = 77x₁ + 3x₂1=26x₁ + x₂X3 = 0C. X₁= 1x2= 2x3= 39.In each part, determine whether the given 3-tuple is a solutionof the linear system2x₁4x₂ - X3 = 1C. -8x₁ + 2d. 3v-8w14. a. x+10y =b. x₁ + 3x₂c. 4x₁ + 2x-d. v+w+.In Exercises 15-1Use parametric e15. a. 2x - 3y =6x-9y=b.x₁ + 3x₂3x₁ + 9x2-X₁ - 3x₂16. a. 6x₁ + 2x₂3x₁ + x₂In Exercises 17-18,create a 1 in the uppwill not create any f-1

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near sys- 11. In each part, solve the linear system, if possible, and use the result to determine whether the lines represented by the equa- tions in the system have zero, one, or infinitely many points of intersection. If there is a single point of intersection, give its coordinates, and if there are infinitely many, find parametric equations for them. a. 3x - 2y = 4 c. x-2y = 0 b. 2x - 4y = 1 4x-8y = 2 6x - 4y = 9 x - 4y = 8