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3 years ago

Use these graphs to solve the simultaneous equations 5x-9y = -46 y = -2x

Mathematics

1 answer:

tia_tia [17]3 years ago

4 0

Answer:

(-2, 4)

Step-by-step explanation:

In the first equation substitute -2x for y, obtaining: 5x - 9(-2x) = -46

Then 5x + 18x = -46, or 23x = -46, resulting in x = -2

Since y = -2x, y = -2(-2) = 4

The solution is (-2, 4)

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