Answer: y=5x+3
Step by step explanation: 
Perpendicular meaning that the product of the slope/gradient is -1 hence ...
-1/5 * x = -1 
x = -1/-1/5
x = 5 
The equation perpendicular to y=-1/5x-3 is y=5x-c 
Now it contains the points (1,2) 
x variable is 1 and y variable is 2 plug them into the line equation 
2=5(1)-c 
2=5-c
2-5=-c
-3=-c divide by -1
3=c 
Hence the perpendicular equation is y=5x+3 
Hopefully it’s correct :)