Given that Y1 = 2x-1, y2 = 5x + 7, when x is what value, Y1 is smaller than Y2 by 1
y1=y2-1
2x-1=5x+7-1
5x-2x=-1-7+1
3x=-7
x=-7/3
RELATED INFORMATIONS
- 1. Let Y1 = 1 / 5x + 1, y2 = (2x + 1) / 4, when what is the value of X, Y1 and Y2 are opposite numbers to each other? (solved by a linear equation of one variable)
- 2. Let Y1 = 1 / 5x + 1, y2 = 2x + 1 / 4, when what is the value of X, Y1 and Y2 are opposite numbers?
- 3. Given that Y1 = 2x + 1, y2 = 5x-8, when what is the value of X, are Y1 and Y2 opposite to each other?
- 4. Given that Y1 = 1 / 5x + 1, y2 = (2x + 1) / 4, when what is the value of X, Y1 and Y2 are opposite to each other?
- 5. (1) The minimum value of y = 2cos square x + (root sign 3) sin2x + A in [0 degree, 90 degree] is - 4. Find the value of A (2) Prove cos20cos40cos80 = 1 / 8
- 6. It is known that x = 3 is the solution of the linear equation 2x - (K / 2-1) x-3 = 0 with respect to x, and the value of K is obtained
- 7. It is known that one root of the linear equation x & # 178; + 2x + M = 0 with respect to X is x = - 3 to find the value of M and the other root of the equation
- 8. It is known that x = 1 is the value of M for the linear equation of one variable 2x-m + 1 = 0
- 9. If the solution of (2x-r / 3) - (x-3r / 2) = 1 is x = - 1, then the value of R is
- 10. 1 / 2x + {2 / 3x + 3 / 1y square], where x = negative 2 and y = 2 / 3
- 11. It is known that the parabolic equation y = 4x square, the straight line L passes P (- 2,1), and the slope is K. when what is the value of K, there is only one common point between the straight line L and the parabola There are two common points, no common points? Ask for detailed explanation
- 12. It is known that the equation of parabola is y quadratic = 4x, the straight line I passes through the fixed point P (- 2.1), and the slope is K It is known that the equation of parabola is y quadratic = 4x, the straight line I passes through the fixed point P (- 2.1), and the slope is K. when the value of K is, the straight line and parabola have only one common point and two common points
- 13. It is known that the parabolic equation y ^ 2 = 4x, the straight line L passes through the fixed point P (- 2,1), and the slope is K. when k is the value, the straight line L and the parabola have two common points
- 14. It is known that the parabola y ^ 2 = 2x (P greater than 0), passing through point (1,0) as a straight line with slope k, intersects parabola at two points a and B. the symmetric point of point a about X axis is C It is known that the parabola y ^ 2 = 2x (P is greater than 0), passing through point (1,0) as a straight line with slope k, l intersects the parabola at two points a and B, the symmetric point of point a about X axis is C, and the straight line BC intersects X axis at Q. try to prove that when k changes, q is a fixed point
- 15. (1) translate the parabola Y1 = 2x2 two units to the right to get the parabola Y2 Ask 2010 Zhejiang Yiwu high school entrance examination question 16 very detailed analysis? 16. (1) translate the parabola Y1 = 2x2 two units to the right, and get the result For the image of parabola Y2, then y2 = ■; (2) As shown in the figure, P is a moving point on the symmetry axis of the parabola Y2, The straight line x = t is parallel to the Y axis, and is respectively parallel to the straight line y = x The parabola Y2 intersects at points a and B. If △ ABP is a parabola Or an isosceles right triangle whose point B is a right vertex If the value of T is sufficient, then t = 0 can be found in the graph. Don't copy the analytic answers they wrote for me
- 16. The parabola Y1 = 2x2 is translated to the right by 2 units to obtain the image of parabola Y2 as shown in the figure. P is a moving point on the symmetry axis of parabola Y2. The line x = t is parallel to the Y axis, and intersects with the line y = x and parabola Y2 at points a and B respectively. If △ ABP is an isosceles right angled triangle with point a or point B as the right angle vertex, then t is the value of T satisfying the condition=______ .
- 17. As shown in the figure, if the parabola Y1 = - x2 + 2 is shifted one unit to the right to get the parabola Y2, then the area of the shadow part in the figure is () A. 2B. 3C. 4D
- 18. It is known that two points a (1, Y1), B (2, Y2) on the parabola y = - x ^ 2 + 2x + 1 compare the sizes of Y1 and Y2. (try to solve it in many ways)
- 19. Given the parabola Y1 = ax Λ 2-2x + C through (0, - 1) inverse scale function y2 = K / X through (1, a), compare the size of Y1 and Y2
- 20. Given that a (- 2, Y1), B (- 1, Y2) and C (2, Y3) are all on the square of the parabola y = 2x, then the size relation of Y1, Y2 and Y3 is