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2 years ago

Use the elimination method to solve the system of equations. 5x - 2y = 9 and 3x + 4y = -5

Mathematics

2 answers:

Nana76 [90]2 years ago

6 0

Answer: Y = -2 and x = 1

Simplify:

10x − 4y = 18

3x + 4y = -5

Substitute and then the final answer is shown above.

yaroslaw [1]2 years ago

4 0

Answer:

(1,-2)

Step-by-step explanation:

2(5x-2y=9) = 10x-4y=18

3x+4y=-5

4 cancels out then u add everything together

now u have 13x=13 the u divide 13x on both sides and you'll get x=1

now u plug xin to what ever equation u want i pick 3x+4y=-5

now u have 3(1)+4y=-5 then 3+4y=-5 then u subtract 3 on both sides and you get -8

now u have 4y=-8 then u divide and u get y=-2

x=1 y=-2

(1,-2)

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Answer:

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Step-by-step explanation:

To find if an ordered pair is a solution to the inequality, substitute its x and y values for the x and y in the inequality and solve. If the equation is true, then it is a solution. If it is not, then it is not a solution.

1) First, substitute the x and y values of (3, 1) into the inequality. So, substitute 3 for x and 1 for y:

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