The slope of a perpendicular line is the negative reciprocal of the normal slope. For example, 3/7 would become -7/3.
Because the slope of this line is 1/5, the slope of a line that is perpendicular to it is -5.
Now, to find the equation of the line, we need to find the y intercept. Since the line passes through (0,0), that is the y intercept. Now, we can make the equation of the line.
y = -5x
Mixed numbers are basically sometimes a sign of division. You need to turn the mixed number into an improper fraction.
Steps:
Multiply the whole number by the denominator of the fraction and then add that product to the numerator. Leave the denominator as it is before.
Example:
2 1/4
2x4=8
8+1= 9
Answer: 9/4
Then you can divide!