<u>Given:</u>
It is given that the value of the graph when the input 7 is 
We need to determine the value of x when 
<u>Value of x when </u>
<u>:</u>
The value of x can be determined by using the graph.
From the graph, we need to determine the value of x when
other than the value x = 7.
This can be determined by finding the point at which the line meets the point y = 4, we can find the corresponding x - value.
Thus, from the graph, it is obvious that the graph also meets the point y = 4 when x = -8.
Therefore, the input value is x = -8 which makes 
Hence, the input value other than 7 for which
is x = -8.
Answer: 21 +4c
Step-by-step explanation:
2) If we have 2 points K & M with their coordinates (x₁,y₁) & (x₂,y₂), the the distance of KM is given by the formula:
KM = √[(x₂-x₁)² + (y₂-y1)²] ; K(2,3) & M(5,1) (Given)
KM = √[(5-2)² + (1-3)²] ==>√(9+ 4) ==> KM = √13 (ANSWER D)
3) The coordinates are A(4,7) & B(-3,9). Follow & apply the same methodology as above:
AB =√[(x₂-x₁)² + (y₂-y1)²] ; A(4,7) & B(-3,9) (Given)
AB =√[(-3-4)² + (9-7)²] ==> AB = √[(-7)² + (2)²] ==> √(49+4) =√53 (B)
;
The angles are congruent (equal)
8x + 6 = 4x + 38
4x + 6 = 38
4x = 32
x = 8
∠B = 4(8) + 38 = 70°
It would be: 2.836x10^-5
Hope I helped :) Let me know if you have any more questions!