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Solve the system of equations.

y = -13x + 38
y = x² - 10x - 2
Write the coordinates in exact form. Simplify all fractions and radicals.

User Ddacot
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1 Answer

6 votes

Final answer:

To solve the system of equations y = -13x + 38 and y = x² - 10x - 2, set the equations equal to each other and solve the resulting quadratic equation. The solutions are (-5, 103) and (8, -54).

Step-by-step explanation:

To solve the system of equations y = -13x + 38 and y = x² - 10x - 2, we can set the two equations equal to each other:

x² - 10x - 2 = -13x + 38

Next, we rearrange the equation to standard form:

x² - 3x - 40 = 0

Now, we can solve this quadratic equation either by factoring, completing the square, or using the quadratic formula:

x² - 8x + 5x - 40 = 0

x(x - 8) + 5(x - 8) = 0

(x + 5)(x - 8) = 0

x = -5 or x = 8

Substituting these values into either equation, we can find the corresponding y-coordinates:

For x = -5: y = -13(-5) + 38 = 103

For x = 8: y = -13(8) + 38 = -54

Therefore, the coordinates in exact form are (-5, 103) and (8, -54).

User Dunois
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