The lines represented by the equations 20y−24x=−20 and 5y−6x=−5 are... a)perpendicular
b)the same line
c)neither parallel nor perpendicular
d)parallel

Choice B

Step-by-step explanation:

The best way to compare two lines is to solve for y.

The first equation:

For the first thing we should do is add the 24x on both sides which will cancel out itself on the left side . Now all we have to do is divide the 20 on both sides to leave us with .

The second equation:

For the first thing we should do is add the 6x on both side which will cancel itself on the left side . Now all we have to do is divide the 5 on both sides to leave us with .

Now for the comparison:

They are the same exact line. If you were to graph them they would overlap each other.

The zeroes are the x intercepts, aka the points where the line crosses the x axis. So in your equation we will have an x-intercept where any of the parenthesis is equals to 0. Lets begin
x+3=0
x= -3

x-3=0
x= 3

x-4=0
x=4

So your zeroes are x= -3, 3, 4

You can use this site to graph your equation:
https://www.desmos.com/calculator