A quadratic function has one root at 5 and has a vertex point at (7, 2). What is the value of “a”?

where a-term determines the shape of graph.

h-term determines the change of graph for x-axis.

k-term determines the change of graph for y-axis.

Vertex of the graph is at (h,k).

We need to find the value of a-term. We have the given root which we can substitute in the equation.

Also the roots are on x-axis, meaning that the y-value for roots must be 0.

Therefore the value of a is - 1/2. Rewrite the equation as we get the answer.

question is incomplete.

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