Let b = x
a = x + 773
x + <span>x + 773 = 177973
2x + </span><span>773 = 177973
2x = </span>177973<span> - 773
2x = 177200
x = </span>177200<span>/2
x = 88600
The other is x + 773, = 8860</span>0<span> + 773 = 89373
Each country is </span><span>88600</span> and 89373 square kilometers.
X-intercept: y = 0
y-intercept: x = 0
3x + 4y = 0
x-intercept: subtitute y = 0
3x + 4 · 0 = 0
3x = 0
x = 0 → (0; 0)
y-intercept: subtitute x = 0
3 · 0 + 4y = 0
4y = 0
y = 0 → (0; 0)
<u>Step-by-step explanation:</u>
Co-ordinates = (4,8) & (-9,5)
Slope (m) = (y² - y¹) / (x² - x¹)
(m) = (5 - 8) / (-9 - 4)
(m) = -3 / -13
(m) = 3 / 13
Equation => y = mx + c
