Y=kx+b is oblique. When k is not equal to 0, the oblique equation is the expression of a straight line, so the geometric meaning of k and b in the linear function is to represent the slope of the straight line and the intercept on the Y axis respectively.
What are the expressions of two-point oblique intercept and when to use it? The common expression ax+by+c=0 has the advantage that it can represent any straight line on the plane, and that's all.
Other formulas have special cases where straight lines cannot be represented. For example:
The oblique formula y=kx+b cannot represent the straight line x=a perpendicular to the x axis.
The oblique y-y0=k(x-x0) cannot represent the straight line x=a perpendicular to the x axis.
Two-point formula (y-y1)/(y2-y1) = (x-x1)/(x2-x1). It cannot represent a straight line when two points x 1=x2 or y 1=y2 (that is,
The intercept formula x/a+y/b= 1 cannot represent a straight line with an intercept of 0, such as a proportional straight line.
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General formulas need to determine three constants A, B and C (although only two are independent), while other formulas only need to determine two constants, so other formulas are more concise. In practical application, most of them are based on given conditions, and other formulas are mainly chosen for the convenience of calculation.
The difference between point oblique type, oblique type, two-point type and general formula and the limit point of each formula. Use oblique formula when knowing one point and slope, oblique formula when knowing y-axis intercept and slope, and two-point formula when knowing two points. Then all the above can be converted into general formula, that is, the general formula applies to all straight lines. A straight line sometimes meets several conditions at the same time, and only by using it flexibly can we solve the problem well.
The difference in slope between oblique formula and general formula shows that you haven't figured out what slope is. You change the general formula into an oblique one and compare it again. Is there a k=-A/B?
How to do the general formula and oblique translation of higher order function? General translation is different from oblique translation, right? identical
That is, add left and subtract right, and add and subtract down.
So up A, a>0, Y becomes Y-A.
Next one, one>0, y becomes y+a.
Left A, a>0, X becomes X+A.
On the right, A, a>0, X becomes X-A.
Senior one mathematics: what is the formula of the general formula change point oblique formula? Y=kx+b is the general formula, then the formula of point inclination is (y-y0)/(x-x0) = K. That is, y=kx+(y0-kx0). Then you just need to find the slope and coordinates of a point on the straight line.
What Japanese, Korean and Chinese style hot springs are there? In fact, in China, there is not much difference between Japanese, Korean and Chinese styles, and they basically learn from each other. Daiwa Soup and Koryo Soup are famous internationally, but their origin is in China. Japanese style and Korean style are more gimmicks and ruined, but there are more tricks and more creativity.
How to find the formula of the distance from a point to a straight line directly when encountering the oblique formula (the general formula is known, so don't change the oblique formula into the general formula) A(a, c) and Y = KX+B?
kx-y+b=0
d=la*k+c*(- 1)+bl/√( 1+k^2)
What are the oblique equation and oblique equation from point to straight? Math god, help. Look up the math books in high school and tell you later.
General formula of slope of straight line -A/B