Answer:
The form ax2 + bx + c = 0 is called standard form of a quadratic equation. Before solving a quadratic equation using the Quadratic Formula, it's vital that you be sure the equation is in this form.
Step-by-step explanation:
1.) Parallel to 10x - 5y = 8 ; (2,4)
10x - 5y = 8
5y = 10x - 8
y = 2x - 8/5
m = 2
y - 4 = 2(x - 2)
y - 4 = 2x - 4
y = 2x
2.) Parallel to 4x + 2y = 5 ; (-3,5)
4x + 2y = 5
2y = -4x + 5
y = -2x - 5/2
m = -2
y - 5 = -2(x + 3)
y - 5 = -2x - 6
<span>y = -2x -1
</span>
3.) Parallel to 4x + y = -1 ; (5,0)
4x + y = -1
y = -4x - 1
m = -4
y - 0 = -4(x - 5)
y = -4x + 20
4.) Perpendicular to x - 5y = -10 ; (2,5)
x - 5y = -10
5y = x + 10
y = x/5 - 2
m = -5
y - 5 = -5(x - 2)
y - 5 = -5x + 10
y = -5x + 15
5.) Perpendicular to x - 3y = 9 ; (3,5)
x - 3y = 9
3y = x - 9
y = x/3 - 3
m = -3
y - 5 = -3(x - 3)
y - 5 = -3x + 9
<span>y = -3x + 14</span>
The answers is
X = -18 + 2 √103
X = -18 - 2 √103
1. 6.5, 2. 22.4, 3. 10 and 11, 4. 6 and 7, 5. between 8 and 9 but closer to 8
