|
4. |
y
= x2 + 4x + 3
y = 2x + 6 |
|
| Start
with quadratic equation. |
y
= x2+4x+3 |
|
Find
the axis of symmetry. |
x
= -b/2a
x = -(4)/2(1)
x = -4/2
x = -2 |
|
Make
a table, and fill in values of y. |
|
x |
y |
|
-5
-4
-3
-2
-1
0
1 |
8
3
0
-1
0
3
8 |
|
|
Graph
the parabola. |
 |
|
Find
the slope and y-intercept of the line. |
y
= 2x + 6
slope =
2
y-intercept
= 6 |
|
Graph
the line. |
y
= x2 + 4x + 3
y =
2x + 6 |
|
Find
the points of intersection. |
Solution
Set:
{(-3, 0), (1, 8)}
|
