Question

how to do these?

What is the value of the coefficient of "a" when the quadratic equation y = (3x + 1)(3x − 2) is written in standard form?
a. −2
b. −3
c. 9
d. 6


Identify the vertex for the graph of y = 2x2 + 8x − 3.

a. (2, 21)
b. (2, 17)
c. (−2, −11)
d. (−2, −27)

Determine whether the graph of y = 4x2 + 5x − 8 opens up or down and whether it has a maximum or minimum point.

a. Up; Minimum
b. Up; Maximum
c. Down; Minimum
d. Down; Maximum

Answer 1

1.) I'm not sure sorry:/
2.) To find the vertex just graph the equation and the point that combines the line...like the bottom of a v. That's the coordinates of the vertex.
3.) If you graph the equation then you will get if it's up or down. And you'll be able to find out if its minimum or maximum.

Answer 2

thankss <3 @Kristen17

Answer 3

No prob:)

Answer 4

1. is c.

Answer 5

2 is C

Answer 6

3 is A