Question

If x +2y = 7 and 4x -ay = 10 has no solution then a =? ​

Answer 1

Answer:

I guess a=8

Step-by-step explanation:

a1/a2=b1/b2

x/4x=2y/-ax

Answer 2

a = -8

because

1st equation

x + 2y = 7

x+2y-7=0

2nd equation

4x-ay =10

4x-ay-10 =0

here ,a1 = 1,a2=4

b1= 2,b2 =- a

no solution in linear equations makes parallel lines.

so,a1/a2 =b1/b2 is not equal to c1/c2

we know

A1/a2= b1/b2

1/4=2/-a

a = -8