Question

Solve using substitution:
-2x − y + 1 = 0
2x = -13 − 3y
Select one:
a. (1, -9)
b. (3, -5)
c. (-2, 5)
d. (4, -7)

Answer 1

d. (4, -7)

Answer 2

Thanks :) up for anotheer?

Answer 3

ok

Answer 4

-2x − y + 1 = 0
2x = -13 − 3y
or
-2x − y = -1
2x + 3y = - 13

add the first eq to the second
2y = -14
y = -7

subst into the first
-2x +7 = -1
substr 7 from both sides
-2x = -8
x = 4

so
(x,Y) = (4, -7)


Hence

Answer 5

d