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Determine whether (1,1) and (-1,4) are solutions to 2x+5y<7

Determine whether (1,1) and (-1,4) are solutions to 2x+5y<7-example-1
User Irco
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2 Answers

2 votes

Answer:

Explanation:

1,1 is a solution

User Zach
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Neither (1, 1) nor (-1, 4) is a solution. Option C

To determine if the coordinates are solution to the inequality, we have to substitute the values of the x and y coordinates.

Then, we have that;

2x+5y<7

For (1,1)

x = 1

y = 1

Substitute the values

2(1) + 5(1) < 7

2 + 5 < 7, this is false

(-1,4)

The value of x = -1 and y = 4

2(-1) + 5(4) < 7

-2 + 20<7, this is false

User Danikoren
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