Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range. y=-0.5x^2+0.7x-5.1

Question

asked Mar 16, 2019 65.6k views

2 Answers

Yozawiratama · Answer 1 · 2019-03-20T21:45:13+0000

Answer:

The domain of the equation is all real number and the range of the equation is (-∞,-4.885].

Explanation:

The given quadratic equation is

y=-0.5x^2+0.7x-5.1

Use a graphing calculator to sketch the graph of the quadratic equation.

The graph of given quadratic equation is shown below.

From the graph it is clear that it is a downward parabola and the vertex of the parabola is (0.7,-4.885).

The function is defined from all values of x, therefore the domain of the function is all real number.

The vertex of the parabola is (0.7,-4.885). It means the maximum value of the function is -4.885 and the value of y cannot be more than -4.885.

So, the range of the function is

$Range=\y\leq -4.885\$

Therefore the domain of the equation is all real number and the range of the equation is (-∞,-4.885].