Question : If there is a technological degradation and/or decrease in resources with respect to both the goods, it is known as ________.

Option 1: Rightward shift in PPF

Option 2: Leftward shift in PPF

Option 3: Rotation on X axis

Option 4: Rotation on Y axis

Question : The graph of the equation $x=a(a \neq 0)$ is a_____.

Option 1: line parallel to the x-axis

Option 2: line parallel to the y-axis

Option 3: line at an angle of 45 degree to y-axis

Option 4: line at an angle of 45 degree to x-axis

Question : When there is a growth of resources, a concave "production possibility curve" will:

Option 1: shift leftward

Option 2: shift rightward

Option 3: become straight

Option 4: become convex

Question : Find the coordinates of the points where the graph $57x – 19y = 399$ cuts the coordinate axes.

Option 1: x-axis at(–7, 0) and y-axis at (0, –21)

Option 2: x-axis at(–7, 0) and y-axis at (0, 21)

Option 3: x-axis at (7, 0) and y-axis at (0, –21)

Option 4: x-axis at (7, 0) and y-axis at (0, 21)

Question : What is the equation of the line whose y-intercept is 4 and is making an angle of 45° with the positive x-axis?

Option 1: $x+y=–4$

Option 2: $x–y=4$

Option 3: $x+y=4$

Option 4: $x–y= – 4$