Question

Find the value of 3x + 4 y – 1 ,if x= 2 and y = -3
​

Answer 1

Answer:

-7

Step-by-step explanation:

3 ( 2) + 4 (-3) - 1

6 + (-12) - 1

6 - 12 - 1

6 - 13

-7

Answer 2

Answer:

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Step-by-step explanation:

We have given from the question  

x  

2

+y  

2

−4x−2y−11=0

(x−2)  

2

+(y−1)  

2

=(4)  

2

 

Now,

I=  

S  

1

​  

 

​  

 

=  

(4)  

2

+(5)  

2

−4(4)−2(5)−11

​  

 

=  

41−16−10−11

​  

 

=  

4

​  

 

=2

Now,

Area of quadrilateral ABCD=2×  

2

1

​  

×2×4

=8

Hence, the required areal of triangle is 8.