Question

if the point - 2, 4 lines on the graph of equation a - 1 Y + 3 X equal to 6 find the value of a

Answer 1

given point=(x,y)=(-2,4)
given equation=a-1y+3x=6
substituting value of x=-2 and y=4
a-1 (4)+3 (-2)=6
a-4+(-6)=6
a-10=6
a=6+10
a=16
verification
a-1y+3x=6
16-1 (4)+3 (-2)=6
16-4-6=6
12-6=6
6=6
hence proved