Answer:
<u>f(x)=x²-2x-2</u>
Step-by-step explanation:
<em><u>f(x)=ax²+bx+c</u></em>
f(0)=-2 => c= -2
f(1)= -3=> a+b-2=-3; a+b=-1
f(2)= -2; 4a+2b-2=-2; 4a+2b=0; 2a+b=0
a+b=-1 and 2a+b=0
2a+b-(a+b)=0+1=> a=1
2+b=0=> b=-2
f(x)=x²-2x-2
Answer:
The answer is

Step-by-step explanation:
If two equations are parallel it means that both their gradients are equal. We were given the equation:

in order to find the gradient of this equation that we are given we have to ensure that it is in its simplest form:

Therefore the gradient of the parallel line with points (-2, 4) is also -5/2


Answer: B
Explanation: No triangle can be formed.
According to the triangle inequality theorem, the sum of any two sides must be greater or equal than the length of the third side.
Here, the sides are 14 cm, 8 cm, and 5 cm.
14cm + 8 cm = 22 cm > 5cm (theorem followed)
14 cm + 5 cm = 19 cm > 8 cm (theorem followed)
8 cm + 5 cm = 13 cm < 14 cm (theorem not followed)
Since, the triangle inequality theorem is not followed, Hence, no triangle can be formed.