Question

if the point (a, a-2) lies on the graph of the equation 3x+5y=30, find the value of a.​

Answer 1

Hope this picture helps you.

Now you can do the graph.

Answer 2

Answer:

a = 5

Step-by-step explanation:

• x = a , y = a-2
• 3x +5y = 30
• 3(a) + 5(a-2) = 30
• 3a + 5a-10 =30
• 8a = 30 + 10
• a = 40 ÷ 8
• a = 5