Question

Use an augmented matrix to solve the system. What is the value of x and y

x+y=5
3x-y=-1

a. (1,4)
b. (1,5)
c. (3,-1)
d. (5,-1)

Answer 1

When converting a liner equation into a augment matrix , which equation form is needed?

a. slope-intercept form
b. negative form
c. graph form
d. standard form

Answer 2

What does the vertical line in an augmented matrix represent?

a.x-value
b.y-value
c.equals sign
d.line on a graph

Answer 3

What would the following system of equations look like in augmented matrix form?

a. [0 0] 5]
[3 -1] -1]

b.[1 1] 5]
[3 -1] -1]

c. [1 5] 1]
[ 3 -1] -1]

d.[1 5]
[3 -1]

Answer 4

#4 is b i think

Answer 5

i think #2 is d

Answer 6

matrix form is same as standard form

Ax + By = C [A B | C ]
Dx + Ey = F ---> [D E | F ]

Answer 7

the vertical line is like the equal sign

Answer 8

so what #2

Answer 9

as i said above you need it in standard form

Answer 10

oh ok so do u knoww if #4 is right?

Answer 11

and #1 i dont know

Answer 12

yep #4 is b :)

Answer 13

for #1 you have to use row operations to get matrix in this form

[ 1 0 | X ]
[ 0 1 | Y ]

Answer 14

A?

Answer 15

yeah its A

since its multiple choice you can also just plug in each answer into equations to see if they work

Answer 16

ok thank you sooo much

Answer 17

yw