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Let the line L intersect the x-axis and y-axis with the point AB respectively. If the line M: y = KX + T (t greater than 0) is parallel to the line L and intersects the x-axis with the point C, the area s of the triangle ABC is obtained with respect to t In ABC, the relation between S and t is {s = 9-2 / 3T (0 < T < 3)} S = 2 / 3t-9 (T > 6) this answer says that point C is on the positive half of the x-axis, but it can also say that when C is on the left side of B, s = 9-2 / 3T, so point C is on the negative half of the x-axis. What's the matter?
∵ the intersection of line L and X, Y axes and points a, B ∵ a, B coordinates are (O, 6) / (3,0) ∵ L ∥ m ∥ m is y = - 2 + T ∥ C point coordinates are (2 / T, 0) ∵ t ∥ 0 ∥ 2 / T ∥ 0 ∥ point C is on the positive half axis of X axis ∥ when C is on the left side of B, s = 9-2 / 3T, and on the right side of B, x = 2 / 3t-9
If the area of △ abo (o is the coordinate origin) is 2, then the value of B is______ ．
If the line y = KX + B passes through the point a (- 2, 0), and the intersection coordinate of the line y = KX + B and the Y axis is (0, b), then the area of △ ABO is 12 × 2 · B = 2, and the solution is b = 2. So the value of B is 2
RELATED INFORMATIONS
- 1. If the area of △ abo (o is the coordinate origin) is 2, then the value of B is______ ．
- 2. The line y = KX + B passes through the intersection a of y = 3x-5 and y = - 2x + 10, y = KX + B intersects Y axis at B, y = - 2x + 10 intersects X axis at C, if s triangle ABC = 12, then k =, B= The line y = KX + B passes through the intersection a of y = 3x-5 and y = - 2x + 10, y = KX + B intersects Y axis at B, y = - 2x + 10 intersects X axis at C, if s triangle ABC = 12, then k =?, B =?
- 3. The function y = (2k + 6) x-k is a first-order function of X, and Y decreases with the increase of X. the value range of K is obtained and the quadrants are pointed out
- 4. The function y = 2k-3 of 2x, when x is less than 0, y decreases with the increase of X, then the value range of K is
- 5. If y = (1-2k) x-k decreases with the decrease of X, and the image of this function does not pass through the second quadrant, what is the value range of K
- 6. Given the function f (x) = / x ^ 2-4x-5 /, if in the interval [- 1,5], the image of y = KX + 3K is above the function f (x), the value range of K is obtained
- 7. If f (x) = (- K2 + 3K + 4) x + 2 is an increasing function, then the range of K is
- 8. The linear equation with a slope of - 2 and an intercept of 3 on the y-axis is () A. 2x+y+3=0B. 2x-y+3=0C. 2x-y-3=0D. 2x+y-3=0
- 9. The equation of the line with intercept of 4 and - 3 on X and Y axes is______ ．
- 10. According to the following conditions, the equation of a straight line is obtained and transformed into a general formula. The intercept on x-axis and y-axis is 2, - 1 respectively
- 11. If the intersection of their images and the y-axis is divided into two parts, the first-order functions y = (n-4) x + (4-2m) and y = (n + 1) x + M-3 are given The first-order functions y = (n-4) x + (4-2m) and y = (n + 1) x + M-3 are known If the intersection of their image and Y axis is point P and point Q respectively If P and Q are symmetric about X axis, the value of M is______ .
- 12. It is known that the intercept of lines L1 and L2 on x-axis is equal, and their inclination angles are complementary, and the line L1 passes through point P (- 3,3). If the distance between point Q (2,2) and L2 is 1, the equation of L2 is solved
- 13. It is known that the intercept of lines L1 and L2 on x-axis is equal, and their inclination angles are complementary, and the line L1 passes through point P (- 3,3). If the distance between point Q (2,2) and L2 is 1, the equation of L2 is solved
- 14. Two straight lines L1: MX + 8y + n = 0 and L2: 2x + MY-1 = 0 are known. Try to determine the value of M, n so that (1) L1 ‖ L2; (2) L1 ⊥ L2, and the intercept of L1 on the Y axis is - 1
- 15. In solving the equations {ax + by = C ① ax by = - 3 ②, Xiao Ming mistook - 3 in equation ② as 3 and got the solution {x = 3, y = 6 because of carelessness The solution is {x = 5, y = 18
- 16. It is known that the linear equation is ax + by + C = 0. When a, B and C are 0 respectively, the position and slope of the line are the same
- 17. It is known that the intercept of the line y = KX + B on the y-axis is 4, and the line passing through the point C (3,2) intersects with the x-axis and y-axis at two points a and B. in addition, there is a point D on the x-axis (3 / 2, 0) finding the area of a quadrilateral bcdo fast
- 18. It is known that the intercept of y = KX + k-2x-3 is 2
- 19. The equation of line L is obtained according to the following conditions: (1) the intercept on the x-axis is - 2, and the intercept on the y-axis is - 3 The equation of the line L is obtained according to the following conditions, (1) The intercept is - 2 on the x-axis and - 3 on the y-axis (2) It passes through point a (- 5,0) with equal transverse and longitudinal intercept
- 20. The general equation in the linear equation, ax + by + C = 0, where are the intercept formulas of the line on the Y axis and the intercept formula on the X axis