to get the equation of any straight line we simply need two points off of it, hmmm let's use the points in the picture below for "a".
20 because if you take 20 half it that would be 10 then take away 4 that would then equal 6.
I Am Going Ask My teacher. I just screenshot it.
-9/6 / -3/2
You can write it as, 9/6 * 2/3 = 3/3 = 1
Answer:
The correct answer will be option b
Step-by-step explanation:
We know that x = rcos( θ ), and y = rsin( θ ), so let's rewrite this polar equation.
r = 4( x / r ) + 2( y / r ),
r = 4x / r + 2y / r,
r = 4x + 2y / r,
r / 1 = 4x + 2y / r ( Cross - Multiply )
4x + 2y = r²
We also know that r² = x² + y², so let's substitute.
x² + y² = 4x + 2y,
x² - 4x - 2y + y² = 0,
Circle Equation : ( x - 2 )² + ( y - 1 )² = ( √5 )²,
Solution : ( x - 2 )² + ( y - 1 )² = 5
