Given the graph of a function, write its analytic expression

It can be seen from the graph of a function that the graph passes through (1,0), (0, - 2) points. Let the analytic formula of a function be y = KX + B (K ≠ 0). Substituting (1,0), (0, - 2) points, we can get K + B = 0b = - 2, and the solution is k = 2B = - 2. Therefore, the analytic formula of a function is y = 2x-2

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1. 1. It is known that the image of a linear function passes through two points a (- 2, - 3) and B (1,3). (1) find the analytic expression of the linear function; (2) try to judge the point 1. It is known that the image of a linear function passes through two points a (- 2, - 3) and B (1,3) (1) Find the analytic expression of this first-order function; (2) Try to judge whether the point P (- 1,1) is on the graph of this linear function 2. Known: function y = (2m + 1) x + (M-3) (1) If the image of this function passes through the origin, find the value of M (2) If the image of this function does not pass through the second quadrant, find the value range of M
2. If the image of a function of degree is known, the analytic expression of the function can be obtained through points a (0,3) and B (2, - 3) (1)
3. If the image of a given function passes through points a (- 1,3) and B (2, - 3), (1) find the analytic formula of a function, (2) judge point C (- 2,5) Why substitute - 3 = 2K + B instead of 3 = - K + B? For example, the following solution 1. Let the analytic expression of a function be y = KX + B, Because the function image passes through the points a (- 1,3) and B (2, - 3), the value of the two coordinate points is substituted into the analytic formula of the function to obtain k = - 2, B = 1, that is, the analytic formula is y = - 2x + 1
4. It is known that the image of a function passes through two points (3,5) and (- 4, - 9), and (1) the analytic expression of the function is obtained. (2) if the point (a, 2) is on the function image,
5. If the image of the first-order function is known to pass through the points (- 2,7), (0,3), find the analytic formula of the function, and judge whether the point a (0.5,2) is on the line
6. Given that the image of a function of degree passes through the point A. (0,8) B (- 4,0), find the analytic expression of the function
7. If the image of a given function passes through points a (0.3) B (2, - 3) (1), find the analytic expression of the function (2) and judge whether point C (- 2.8) is on the image of the function
8. Given that the image of a function passes through both points (1,2) and (- 1,8) 1, find the analytic expression. 2. Judge whether the point (2, - 1) is on the analytic expression of the function
9. The image of a function passes through point a (- 1,3) and point (2,3), the analytic expression of the function is obtained, and whether point C (- 2,5) is on the image of the function is judged
10. When we know the square of the first-order function y = (2m-1) x (3m) - (n + 2), m and N, the image is a straight line passing through (0,4)
11. The figure formed by two lines leading out from one point is called angle
12. The graph formed by the intersection of two straight lines is called an angle. The graph formed by the line segments of two common line segments is called an angle In the following statements, the correct one is () A. The figure formed by the intersection of two straight lines is called angle B. The figure formed by two line segments with common endpoints is called angle C. A pattern of two rays is called an angle D. The pattern of two rays from the same point is called angle
13. Two from one point______ The figure formed is called angle
14. A figure formed by two straight lines drawn from a point is called an angle______ (judge right or wrong)
15. The graph composed of two intersecting lines is called angle B. the graph composed of two line segments with a common endpoint is called angle C. The figure formed by a ray rotating from one position to another around an end point is called an angle D. Angles are two rays from one point [please explain briefly]
16. A figure consisting of two circles, two triangles, and two straight lines Thank you. If it's not enough, I'm offering a reward
17. If two figures are symmetrical about a line, they must be on both sides of the line. Why is it wrong
18. If the image of the line y = 3x + P intersects the X axis of the line y = - 2 + Q at the same point, then the relation between P and Q is——————
19. If the image of the line y = 3x + P intersects the X axis of the line y = - 2x + Q at the same point, the relation between P and Q is obtained P = q-5x (incorrect) Ask for a more accurate answer
20. Given that the point P is a moving point on the right part of the image of quadratic function y = - x ^ 2 + 3x, the line y = - 2x + B (b > 0) intersects the X axis and Y axis at two points CD respectively, If △ PCD with CD as right angle side is similar to OCD of triangle, the coordinates of P can be obtained