Question

On which of the following lines does the point (7, 1) lie?
A. y – 5x = 4
B. y = x – 10
C. y = –4x + 3
D. y = –x + 8

Answer 1

(7,1) is a point of (x,y)
In order to solve this, you need to plug in 7 where to x is, and plug in 1 to where y is.
for A. it will be look like this
1-5(7)=4
1-35=4
then solve the right side and see whether the left match or not. If it's matched, then that will be your answer.