Question

If the point (3, 2) lies on the graph of the equation 5x + ay = 19, then find the value of a.

Answer 1

Answer:

a = 2

Step-by-step explanation:

If (3,2) lies on the 5x+ay = 19, then it must satisfy the equation too.

Putting the value,

5(3)+a(2) = 19

2a = 19-15

a = 4/2 = 2

Answer 2

Answer:

put the value in given equation

$5x + ay = 19 \\ 5 \times 3 + 2a = 19 \\ 15 + 2a = 19 \\ 2a = 19 - 15 \\ 2a = 4 \\ a = 4 \div2 \\ a = 2 \\ find \\ 15 + 2a = 19 \\ 15 + 2 \times 2 = 19 \\ 15 + 4 = 19 \\ 19 = 19$