Question

If the point (4, 5) lies on the graph of 5y = ax + 9, then find the value of a.
plz answer it with explanation

Answer 1

Answer:

a = 4

Explanation:

Given equation,

→ 5y = ax + 9

or, we can write it as :-

→ ax - 5y = -9

Which satisfies the point (4, 5)

Then,

• x = 4
• y = 5

Substituting the coordinates,

→ ax - 5y = -9

→ a(4) - 5(5) = -9

→ 4a - 25 = - 9

→ 4a = 25 - 9

→ 4a = 16

→ a = 16/4

→ a = 4

∴ The value of a is 4