In a rectangular coordinate system, the line 3y=x intersects the line 2x + 5y = 11 at point A. What is the sum of the coordinates of point A?
A triangular region is bounded by the two coordinate axes and the line given by the equation 2x+y=6. What is the area of the region, in square units?
x = 3y
2x + 5y = 11 sub the first equation into the second for x
2(3y) + 5y = 11
6y + 5y = 11
11y = 11
y = 1
An d x = 3(1) = 3
So A = (3, 1) .....sum of coordinates = 4