Answer:
Gradient = -3
• Parallel lines have the same gradient, therefore gradient, m is -3
• At point (0, -4)
y intercept is -4
Answer:
Center = (5, -2) and radius = √33
Step-by-step explanation:
The equation of a circle is given by the formula;
(x-a)² + (y-b)² = r² ; where (a,b) is the center of the circle and r is the radius of the circle.
In this case;
2x² - 20x + 2y² + 8y =40 ;
Dividing both sides of the equation by 2 we get;
x² - 10x + y² + 4y = 20
we can then use the completing the square on both x and y terms.
x² - 10x + y² + 4y = 20
x² + 2(-5)x + 25 + y² + 2(2) y + 4 = 20 +9 + 4
In standard form we get;
(x-5)² + (y+2)² = 33
Therefore;
Center = (5, -2) and radius = √33
Answer:
Step-by-step explanation:
Step 3
Answer:
-104
Step-by-step explanation:
Step 1: Write out expression
6(-16) - 8
Step 2: Evaluate
-96 - 8
-104
Answer:
b
Step-by-step explanation:
