The graph of the function y = KX + B is parallel to the straight line y = 2x and passes through the point (0,3)
The image of ∵ function y = KX + B is parallel to the straight line y = 2x, ∵ k = 2. Substituting (0, 3) into y = 2x + B, we get: 3 = B, ∵ function analytic formula is: y = 2x + 3
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- 1. The graph of the function y = KX + B is parallel to the straight line y = 2x and passes through the point (0,3)
- 2. Given the positive scale function y = KX, (1) if the function image passes through the second and fourth quadrants, then the value range of K
- 3. Given that the graph of a function y = kx-3 is parallel to the straight line y = 2x + 1, (1) find the analytic expression of the function, (2) which quadrants does the graph of the function pass through
- 4. As shown in the figure, it is known that the image of the line y = x + 3 intersects with the X and Y axes at two points a and B. the line L passes through the origin and intersects with the line AB at point C. the area of △ AOB is divided into two parts of 2:1. The analytical formula of the line L is obtained
- 5. The image of the function y = 3 ^ X and y = - 3 ^ (- x) is symmetric about which of the following figures a.x axis b.y axis C. straight line y = x D. origin center is symmetric
- 6. As shown in the figure, a and C are any two points symmetrical about the origin on the image of the function y = KX (K ≠ 0), AB and CD are perpendicular to the X axis, and the perpendicular feet are B and D respectively. Then the area s of the quadrilateral ABCD is () A. k2B. 2kC. 4kD. k
- 7. The image of the function y = 3 ^ X and y = - 3 ^ (- x) is symmetric about a.x axis b.y axis C. line y = x D. origin
- 8. The length of a rectangle is x, the width is y, the perimeter is 16, and the area is 15. Find the value of X & # 179; y + 2x & # 178; Y & # 178; + XY & # 179
- 9. The area of a rectangle is X & # 178; + xy-12y & # 178;, and its length is x + 4Y
- 10. Given that the length of the rectangle is x, the width is y, the perimeter is 16, and the area is 15, find the value of x ^ 3 y + 2x ^ 2Y ^ 2 + XY ^ 3
- 11. It is known that the image of a first-order function is parallel to the line y = 2x, and it intersects with the line y = - 3x-5 / 2 and has the same point on the y-axis
- 12. The value of M is calculated on the x-axis through the intersection point of the image of the first-order function y = 3x + m and the image of the first-order function y = 4-2x
- 13. We know the quadratic function y = x ^ 2-mx-4. (1) prove that the image of the function must have two different intersections with the X axis; (2) let the coordinates of the intersection of the image of the function and the X axis be (x1,0), (x2,0), and 1 / X1 + 1 / x2 = - 1, find the value of M, and find the vertex coordinates of the function image. (please answer with junior high school mathematics knowledge)
- 14. It is known that the image of a linear function y = - 0.5x is parallel, and the intersection point (0, - 3) of the function and the Y axis is obtained
- 15. It is known that the image of a function of degree passes through point a [2,3] and the ordinate of the intersection point with the y-axis is 4 Be detailed as soon as possible
- 16. Given that the image of a function y = KX + B passes through points m (- 1,1) and (0,2), let the image intersect with the x-axis at point a and with the y-axis at point B: Q: on the x-axis Given that the image of a function y = KX + B passes through point m (- 1,1) and point (0,2), let the image intersect with X axis at point a and Y axis at point B: Q: is there a point P on X axis, so that the triangle ZBP is an isosceles triangle? If it exists, the coordinates of all the points P that meet the conditions can be obtained. If not, please give reasons
- 17. Given that the image of the first-order function y = KX + B passes through the point (- 2,5) and intersects with the y-axis at the point P, the line y = - 12x + 3 intersects with the y-axis at the point Q, and the point q is exactly symmetric with the point P about the x-axis, the expression of the first-order function is obtained
- 18. Given that the image of the first-order function y = KX + B passes through the point (- 2,5) and intersects with the y-axis at the point P, the line y = - 12x + 3 intersects with the y-axis at the point Q, and the point q is exactly symmetric with the point P about the x-axis, the expression of the first-order function is obtained
- 19. Given the points a (1,1) and B (- 3,2), connecting the Y-axis of AB to the point P, then PA + Pb is the shortest. May I ask: is there a point m on the x-axis, so that Ma + MB is the shortest? If so, find out the coordinates of point m; if not, please explain the reason What are the coordinates of M
- 20. The rectangular white paper with the length of 38cm and the width of 5cm is glued together according to the method shown in the figure, and the glued part of the white paper is 2cm. (1) calculate the length of 10 pieces of white paper after gluing; (2) set the total length of X pieces of white paper after gluing as YCM, and write the functional relationship between Y and X