How can you tell if a point is a solution or not on a graph

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96

so part 1: the y values stay the same, but the x values are opposite signs.

part 2 & 3: the line will be of equal lengths and will be straight.

part 4: you'd see the same characteristic because the x coordinate becomes a negative making them at equal distances from the y axis?