7x + 5y = -13
-2x - 7y = 21
The system of equations is elimination.
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MAX POINTS
algebra 1

x=14/39, y=-121/39. (14/39, -121/39).

Step-by-step explanation:

7x+5y=-13

-2x-7y=21

2(7x+5y)=2(-13)

7(-2x-7y)=7(21)

14x+10y=-26

-14x-49y=147

-39y=121

y=121/-39

y=-121/39

-2x-7(-121/39)=21

-2x+847/39=21

-2x=21-847/39

-2x=819/39-847/39

-2x=-28/39

2x=28/39

x=(28/39)/2

x=(28/39)(1/2)

x=28/78

simplify

x=14/39

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.

560

step-by-step explanation:

giggidy