The slope of the graph of a direct variation is always positive.
No, never.
Yes
To trace a curve using differential calculus, you use the fact that the first derivative of the function is the slope of the curve, and the second derivative is the slope of the first derivative. What this means is that the zeros (roots) of the first derivative give the extrema (max or min) or an inflection point of the function. Evaluating the first derivative function at either side of the zero will tell you whether it is a min/max or inflection point (i.e. if the first derivative is negative on the left of the zero and positive on the right, then the curve has a negative slope, then a min, then a positive slope). The second derivative will tell you if the curve is concave up or concave down by evaluating if the second derivative function is positive or negative before and after extrema.
The slope of a curved line at a point is the slope of the tangent to the curve at that point. If you know the equation of the curve and the curve is well behaved, you can find the derivative of the equation of the curve. The value of the derivative, at the point in question, is the slope of the curved line at that point.
Is always negative. (should be in all caps for emphasis)
The principle of diminishing marginal utility explains the slope of the demand curve by letting us be able to see which direction the slope is in, which is always downward.
Price elasticity of demand is equal to the instantaneous slope of the demand curve, or the slope of the tangent line at any point on the demand curve. So if the demand curve is represented by a straight downward sloping line, then yes, price elasticity of demand is equal to the slope of the demand curve. Otherwise, the slope at any point on the curve is changing, and you can find the it by taking the derivative of the demand curve function, which will find the Price elasticity of demand at any single point. Thus, the Price Elasticity of Demand changes at different points on the demand curve.
Along a linear demand curve elasticity varies from point to point of the demand curve with respect to different price, but slope is constant
Downward
A demand curve can have an upwards slope. It solely depends on if the demand for an item is high or low.
because demand decreases as price increases :)
Paradoxical demand curve is a theory that the slope of a product will change a different times. This is called Griffin's Paradox.
A demand curve slopes downward left to right because the relationship between price and demand is negative - as price drops demand rises. The opposite is true for a supply curve where as price rises supply rises - the relationship is positive so the supply curve slopes upward from left to right. Nova net answer- because demand decreases as price increases
A demand curve slopes downward left to right because the relationship between price and demand is negative - as price drops demand rises. The opposite is true for a supply curve where as price rises supply rises - the relationship is positive so the supply curve slopes upward from left to right. Nova net answer- because demand decreases as price increases
Price elasticity is a specific type of slope of the demand curve. A perfectly inelastic demand means that the quantity will not change with the price. This line is perfectly vertical. A perfectly elastic demand curve is horizontal and means that at any given quantity, there is only one price. Also, a slope gets steeper, demand becomes more inelastic.
positive slope is the main slope of sras curve. sras curve is positively sloped because when price level increases then GDP also increases in the short run which means if wage increases then definitely demand will be increased hense we can say that national income (GDP) will rise definitely so here production of a purticular country wll be on the positive line during a short period. ( think i have given my answer ) thank you.