Question

The line y = 4x + c passes through (1,7), find the value of c

Answer 1

y= 4x + c
At (1,7) (7)=4(1) + c
7= 4 + c
c = 7-4=3
c=3

Answer 2

c = 3

Explanation:

y = 4x + c

to find c substitute (1, 7 ) into the equation

7 = 4 + c ⇒ c = 7 - 4 = 3