2x+y=1 9x + 3y = -3 the x-coordinate of the point of intersection is : a. 5b. -2 c. 0

B

given the 2 equations

2x + y = 1 → (1)

9x + 3y = - 3 → (2)

from (1) : y = 1 - 2x

substitute y = 1 - 2x in (2)

9x + 3(1 - 2x) = - 3 ( distribute and simplify left side )

9x + 3 - 6x = - 3

3x + 3 = - 3 ( subtract 3 from both sides )

3x = - 6 ( divide both sides by 3 )

x = - 2 → B

i think it is 70

step-by-step explanation:

overpriced

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