Question

if the point (3,4) lies on the line 3x =ay+7 ,then find the value of a.

Answer 1

Put x=3 and y=4 in the equation 3x=ay+7
3x=ay+7
3*3=a*4+7
9=4a+7
4a=9-7
4a=2
a=1/2

Answer 2

In this x=3 and y=4
$3 \times 3 = a \times 4 + 7$
9-7=a x 4
$a = 0.5$