Is it positive, zero, or negative?

Discriminant is positive.

Step-by-step explanation:

From the given graph,

Vertex of the parabola = (-3, -2)

y - intercept of the parabola = (0, 1)

Vertex form of a parabola opening upwards is,

y = a(x- h)² + k

Here (h, k) is the vertex.

By substituting the values of the vertex in this equation.

y = a(x + 2)² - 3

Since this parabola passes through (0, 1)

1 = a(0 + 2)² - 3

a =

a = 1

So the equation of the parabola will be

y = (x + 2)² - 3

y = x² + 4x + 4 - 3

y = x² + 4x + 1

Here a = 1, b = 4 and c = 1 (comparing with standard quadratic equation y = ax² + bx + c)

Discriminant of a quadratic equation is represented by,

(b² - 4ac)

Therefore, the value of discriminant = (4)² - 4(1)(1)

                                                            = 16 - 4

                                                            = 12

Therefore, discriminant of the given graph is positive.

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b