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Norma-Jean [14]
2 years ago
10

Y=x^(2) -2x - 3 and y = x - 3

Mathematics
1 answer:
Oliga [24]2 years ago
5 0

Answer:

(0, -3) and (3, 0)

Explanation:

1st equation: y = x² -2x - 3

2nd equation : y = x - 3

Using substitution method:

x² -2x - 3 = x - 3            <em>exchange sides</em>

x² - 2x - x - 3 + 3 = 0    <em>simplify</em>

x² - 3x = 0   <em>                 take common factor</em>

x(x - 3) = 0                    <em>simplify</em>

x = 0, 3

Solve for y:

when x is 0, y = x - 3 = 0 - 3 = -3

when x is 3, y = x - 3 = 3 - 3 = 0

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