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UNO [17]
3 years ago
12

Y = -4x + 15 y = 4x - 41 substitution

Mathematics
1 answer:
Lisa [10]3 years ago
6 0

Substitute y = -4x + 15 to the equation y = 4x - 41:

-4x + 15 = 4x - 41        <em>subtract 15 from both sides</em>

-4x = 4x - 56       <em>subtract 4x from both sides</em>

-8x = -56 <em>       divide both sides by (-8)</em>

x = 7

Put the value of x to the first equation:

y = -4(7) + 15

y = -28 + 15

y = -13

<h3>Answer: x = 7 and y = -13 → (7, -13)</h3>
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3 years ago
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