We should change this equation to the slope-intercept form first. y = mx + b
So all we have to do is move the term with the x variable in it to the other side by adding it (inverse of a negative).
-2x - 4y = -20
+2x on both sides
-4y = 2x - 20
Now, we divide the whole thing by -4 to get y alone.
y = -1/2x + 5
To calculate for y, we must set x to 0.
y = 0x + 5
y = 5
To calculate for x, we must set y to 0.
(0) = -1/2x + 5
Move 5 by subtracting 5 to both sides.
-5 = -1/2x
Now we have to get x alone, to do that, we must divide by -1/2 on both sides.
10 = x
Answers:
y = 5
x = 10
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