When you see how easy this is, you'll smack yourself upside the head.
Take #60. Those are two lines.
-- One line is x=-5. That's a vertical line that crosses the x-axis where x=-5, and EVERY POINT on it is at x=-5 no matter what 'y' is at that point.
-- The other line is y=2. That's a horizontal line that crosses the y-axis
where y=2, and EVERY POINT on it is at y=2 no matter what 'x' is at that
point.
So you have the intersection of two lines. On one of them, 'x' is always -5. On the other one, 'y' is always 2 . Now what do you suppose the coordinates will be at the point where they cross ? Could it possibly be anything different from (-5, 2) ? ?
In #62:
On the first line, 'y' is always -6. On the other line, 'x' is always 1.
They MUST intersect at (1, -6) .
In #64:
On one line, 'y' is always -1. On the other line, 'x' is always zero.
(The line where 'x' is always zero happens to be the y-axis.)
I'm SURE that by now you know where these two lines intersect.
You don't even have to graph any of these to know where they intersect !
You can just look at the problem and the coordinate pair jumps out at you.
