Write the equation of the parabola that passes through the points (−4,0), (−3,4), (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.
Q. Write the equation of the parabola that passes through the points (−4,0), (−3,4), (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.
Identify x-intercepts: Identify the x-intercepts from the given points. Points (−4,0) and (1,0) are x-intercepts, so p=−4 and q=1.
Write equation in form: Write the equation in the form y=a(x−p)(x−q). Substituting p and q, we get y=a(x+4)(x−1).
Use point to find a: Use the point (−3,4) to find the value of a. Substitute x=−3 and y=4 into the equation: 4=a(−3+4)(−3−1).
Simplify and solve for a: Simplify and solve for a: 4=a(1)(−4), 4=−4a, a=−1.
More problems from Write a quadratic function from its x-intercepts and another point