Answer:
y=2x-3
Step-by-step explanation:
Since we know that the slope-intercept form is y=mx+b, we can plug in the formula with what we already know to find b!
In the coordinates (2,1):
Now, we will plug these numbers in:
1=2*2+b
1=4+b
b=-3
Now we can rewrite the equation since we found b:
y=2x-3
Hope this helped! :)