Answer:
9) [tex]x = - 4[/tex], 10) [tex]y = 1[/tex], 13) [tex]y + 3 = -6\cdot (x+2)[/tex]
Step-by-step explanation:
9) A vertical line has the form x = a, which means that for all value of y, the value of x remains constant. Then, the equation of the vertical line passing the point is:
[tex]x = - 4[/tex]
10) A horizontal lines has the form y = a, which means that for all value x, the value of y remains constant. Then, the equation of the vertical line passing the point is:
[tex]y = 1[/tex]
13) The y-intercept is determined with the help of the straight line equation and all known variables:
[tex]y + 3 = -6\cdot (x+2)[/tex]