6 is twice as much as 3...so x will be twice as much as 4. So the answer is...
C. 8
Answer:

Step-by-step explanation:
The point-slope form of an equation of a line:

m - slope
We have

Substitute:

Convert to the slope-intercept form

<em>use the distributive property</em>
<em>add 3 to both sides</em>

Convert to the standard form

<em>multiply both sides by 3</em>
<em>add x to both sides</em>

Y = ax² + bx + c is the equation of a parabola:
y = 4x² -8x -6 is our equation.
The axis of symmetry in a parabola is x = -b/2a
x = -(-8)/(2.4) = - 8/8 and x = - 1 (axis of symmetry
Okay so you do not really need the circle equation. if you make a triangle with it's x length as 3 and it's y length as 4, you will be able to find the third length. Do Pythagorean theorem to find the hypotenuse.
the hypotenuse will be five after you calculate it.
sin is opposite over hypotenuse or Y over R
so... the sin is 4/5
make sure you know what quadrant your triangle is in for the negatives