How do i solve y= -5 in lines in the xy plane ? im confused .

see the explanation

Step-by-step explanation:

we know that

The equation of a horizontal line is equal to the y-coordinate of the point that passes through it  

In this problem we have

This is a horizontal line (parallel to the x-axis)

The slope of this line is equal to zero

so

All points that pass through the line will have the same y-coordinate equal to -5

see the attached figure to better understand the problem

yes

step-by-step explanation:

yes

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.