Question

The parabola passes through coordinates left parenthesis
negative 6 comma negative 1 right parenthesis, left parenthesis
negative 5 comma negative 6 right parenthesis, left parenthesis
negative 3 comma negative 10 right parenthesis, left
parenthesis negative 1 comma negative 6 right parenthesis,
and left parenthesis 0 comma negative 1 right parenthesis.
Which of the following is true based on the graph of the
quadratic?
(1 point)
The c-value of the equation in standard form is −1.
The c-value of the equation in standard form is −10.
The vertex is located at (3, −10)
The a-value is negative.

Answer 1

Answer: The c-value of the equation in standard form is −1.

Reason: c is the y-intercept (y at x=0), and the graph passes through (0,−1), so c = −1. The vertex is actually at (−3, −10) (not (3, −10)), and since that vertex is a minimum the parabola opens upward so a > 0 (not negative).