Write the equation of the parabola that passes through the points (–4,0), (3,0), and (–1,–6).Write your answer in the form y=a(x–p)(x–q), where a, p, and q are integers, decimals, or simplified fractions.
Question
Write the equation of the parabola that passes through the points (–4,0), (3,0), and (–1,–6).Write your answer in the form y=a(x–p)(x–q), where a, p, and q are integers, decimals, or simplified fractions.
Solution
To find the equation of the parabola that passes through the points (-4,0), (3,0), and (-1,-6), we can use the fact that the x-coordinates of the points where the parabola crosses the x-axis (the roots of the equation) are the values of p and q in the equation y=a(x–p)(x–q).
From the given points, we can see that the parabola crosses the x-axis at x=-4 and x=3. So, p and q are -4 and 3.
The equation of the parabola is then in the form y=a(x–(-4))(x–3) = a(x+4)(x-3).
To find the value of a, we can use the third point (-1,-6) which lies on the parabola. Substituting x=-1 and y=-6 into the equation gives:
-6 = a(-1+4)(-1-3) -6 = a(3)(-4) -6 = -12a
Solving for a gives a = -6 / -12 = 0.5.
So, the equation of the parabola is y=0.5(x+4)(x-3).
Similar Questions
Write the equation of the parabola that passes through the points (–2,0), (–3,18), and (–1,0).Write your answer in the form y=a(x–p)(x–q), where a, p, and q are integers, decimals, or simplified fractions.
Write the equation of the parabola that passes through the points (3,0), (5,0), and (6,–12).Write your answer in the form y=a(x–p)(x–q), where a, p, and q are integers, decimals, or simplified fractions.
Write the equation of the parabola that passes through the points (–2,0), (3,0), and (1,–48).Write your answer in the form y=a(x–p)(x–q), where a, p, and q are integers, decimals, or simplified fractions.Submit
Write the equation of the parabola that passes through the points (–5,0), (–2,9), and (3,0).Write your answer in the form y=a(x–p)(x–q), where a, p, and q are integers, decimals, or simplified fractions.
Write the equation of the parabola that passes through the points (–3,24), (–2,0), and (3,0).Write your answer in the form y=a(x–p)(x–q), where a, p, and q are integers, decimals, or simplified fractions.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.