Is the Point on the line?

Question 1:

Does the point
(-15,7)
lie on the line
y = −x − 8
Yes

Question 2:

Does the point
(-28,-21)
lie on the line
y = x + 7
Yes

Question 3:

Does the point
(-29,96)
lie on the line
y = −3x + 5
No

Question 4:

Does the point
(26,-80)
lie on the line
y = −3x − 5
No

Question 5:

Does the point
(-18,-17)
lie on the line
y = x + 4
No

Question 6:

Does the point
(22,55)
lie on the line
y = 3x − 7
No