Which of the following functions are linear? (Choose all that apply)
y = 2x - 4
y = 3 - x2
0
1
-0.
5
|
2
|
|
-1
0
3
-0.5
4
-1
*
1
-2
2.5
|
-1
2.75
0
3
1
3.25
2
3.5

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.