Answer:
The answer is option 2.
Step-by-step explanation:
It is given that the slope of the line is -3 so you just have to substitute it into the slope-form equation, y = mx+b where m is gradient and b is y-intecept. In order to find b value, you have to put in the coordinates :
[tex]y = mx + b[/tex]
Let m = -3,
[tex]y = - 3x + b[/tex]
At (1,4),
[tex]4 = - 3(1) + b[/tex]
[tex]4 = - 3 + b[/tex]
[tex]b = 4 + 3[/tex]
[tex]b = 7[/tex]
[tex]y = - 3x + 7[/tex]