Write the equation of the parabola that passes through the points (−6,0), (1,0), and (−5,−42). Write your answer in the form y=a(x−p)(x−q), where a, p, and q are integers, decimals, or simplified fractions.
Q. Write the equation of the parabola that passes through the points (−6,0), (1,0), and (−5,−42). Write your answer in the form y=a(x−p)(x−q), where a, p, and q are integers, decimals, or simplified fractions.
Identify Points: Identify the values of p and q from the given points where the parabola crosses the x-axis, which are the points (−6,0) and (1,0). Thus, p=−6 and q=1.
Write General Form: Write the general form of the equation using the identified p and q: y=a(x−p)(x−q). Substituting p=−6 and q=1, we get y=a(x+6)(x−1).
Find Value of a: Use the third point (−5,−42) to find the value of a. Substitute x=−5 and y=−42 into the equation: −42=a(−5+6)(−5−1).
Solve for a: Simplify and solve for a: −42=a(1)(−6), −42=−6a, a=7.
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