Answer:
[tex]y = -3x + 5[/tex]
Step-by-step explanation:
We know we'll have to use the linear equation [tex]y=mx+b[/tex]
Since [tex]m[/tex] means gradient (or slope) we know that it's -3 since that's already indicated to us
All that we have to find now is b, and we can find this by plugging in the known values of x and y since we have the coordinate (2,-1)
We can plug these values in and solve for b
[tex]-1 = -3\cdot 2 + b\\-1 + 6 = b \\b = 5 \\[/tex]
Therefore, in order to get the equation we just have to replace b with 5
[tex]y = -3x + 5[/tex]
Good luck!
