Which of the following ordered pairs lies on the graph of h(x) = -2x squared?
(1, 4)
(1, -4)
(1, -2)
Answers
By direct evaluation we conclude that the point (x, y) = (1, – 2) lies on the graph of the quadraticequation h(x) = – 2 · x². (Correct choice: C)
What ordered pair lies on the curve generated by a given function?
In this problem we have three orderedpairs to be checked on a given function by direct evaluation, a orderedpair lines on the curve of function if and only if the x-value of the orderedpair leads to the y-value by evaluating in the function. Now we proceed to evaluate each of the three points at the function presented in the statement:
(x, y) = (1, 4)
h(1) = – 2 · 1²
h(1) = – 2
By direct evaluation we conclude that the point (x, y) = (1, – 2) lies on the graph of the quadraticequation h(x) = – 2 · x². (Correct choice: C)
What ordered pair lies on the curve generated by a given function?