Question

A parabola is graphed on a coordinate plane. The x-axis ranges from negative 10 to 3 in increments of 1. The y-axis ranges from negative 10 to 10 in increments of 1.
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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 −10
.

The vertex is located at (3,−10)


The a-value is negative.

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

Answer 1

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

Reason: c is the y-intercept (value at x = 0). The graph passes through (0, −1), so c = −1. (The vertex is at (−3, −10), and the parabola opens upward so a > 0.)