The graph of a quadratic function has a domain of (-∞, ∞) and range of [4, ∞). In two or more complete sentences, explain how th

Question

earnstyle [38]

3 years ago

8

The graph of a quadratic function has a domain of (-∞, ∞) and range of [4, ∞). In two or more complete sentences, explain how th

e given range of the function can help you to determine whether the graph opens up or down.

Mathematics

1 answer:

lys-0071 [83] · Answer 1 · 2022-08-20T13:13:25+03:00

lys-0071 [83]3 years ago

3 0

RANGE gives you the possible y values. [4, ∞) means the lowest y value - y coordinate of the vertex is 4 and the y is increasing from 4 upwards towards infinity. The graph opens up.
DOMAIN gives you the possible x's. As you can see no restrictions.