Consider the following.

x1 − x2 + 4x3 = 40
x1 + 3x2 = −8
−6x2 + 5x3 = 64

(a) write the system of linear equations as a matrix equation,
ax = b.

x1

x2
x3
=

(b) use gauss-jordan elimination on
[a b]
to solve for the matrix x.
x =

x1

x2
x3
=

The data shown in the table below represents the weight, in pounds, of a little girl, recorded each year on her birthday. age (in years) weight (in pounds) 2 32 6 47 7 51 4 40 5 43 3 38 8 60 1 23 part a: create a scatter plot to represent the data shown above. sketch the line of best fit. label at least three specific points on the graph that the line passes through. also include the correct labels on the x-axis and y-axis. part b: algebraically write the equation of the best fit line in slope-intercept form. include all of your calculations in your final answer. part c: use the equation for the line of best fit to approximate the weight of the little girl at an age of 14 years old.

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days