Asystem of linear equations and a reduced matrix for the system are given. x + 4y + 4z = 2 3x − y = 1 x + 4y + 4z = 3 1 0 4 13 0 0 1 12 13 0 0 0 0 1 (a) use the reduced matrix to find the general solution of the system, if one exists. (if there is no solution, enter no solution. if there are infinitely many solutions, express your answers in terms of z as in example 3.) (x, y, z) = (b) if multiple solutions exist, find two specific solutions. (enter your answers as a comma-separated list of ordered triples. if there is no solution, enter no solution.) (x, y, z) =

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

what

16 is the absolute value

step-by-step explanation: