Question

If the graph of the equation 2x = ax – 4 passes through the point (1,2) then find the value of a​

Answer 1

Answer:

2(1) =a(2) -4

2=2a-4

2-2=a-4

4=a

Answer 2

Given equation is: 2y=ax−4.

It is also given that the point (1,2) lies on the graph of the equation.

⇒2(2)=a(1)−4

⇒a=4+4

⇒a=8

Now, the linear equation is: 2y=8x−4 or y=4x−2

Again, when y=0,x= 1/2

and

when x=0,y= −2

Therefore, the graph of the equation is as: