Question

If ( 4, a ) is a point on the graph of equation 7x + 2y = 42 then what is the value of a?

Answer 1

Answer:

a=7

Step-by-step explanation:

(4,a)=(x,y)

7(4)+2(a)=42

28+2a=42

2a=42-28

2a=14

a=14by 2

a=7