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

Because a function of a degree passes through (0,3), we can assume that the analytic expression of a function of a degree is y = KX + 3
Then we substitute x = - 2, y = 7 into y = KX + 3 to get the following result:
7=-2k+3
2k=3-7
2k=-4
k=-2
Substituting k = - 2 into y = KX + 3, the analytic expression of the function is y = - 2x + 3
When x = 0.5, y = - 2 × 0.5 + 3 = - 1 + 3 = 2, it means that a (0.5,2) is on this line

RELATED INFORMATIONS

1. 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
2. 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
3. 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
4. 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
5. 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)
6. Given the square of a function y = - 2x, how to translate the image of this function so that it can pass through (0,0) and (1,6) points
7. Given the linear function y = - 1 / 2x + 2, if the point m is a point on the function image in the second quadrant, and the distance from the point m to the X axis is twice the distance from the point m to the Y axis, the coordinates of the point m are obtained
8. 1. The quadrant that the image of a function y = - 5x + 3 passes through is? 2. If the image of a function y = 2x + 4 passes through a point (m, 8), then M =?
9. The image of a linear function is parallel to the straight line y = - 5x + 4 and intersects with the image of the function y = 2 / X at the point m (- 2, m) 1) Finding the value of M 2) Find the analytic expression of this first-order function 3) If the image of a linear function intersects the y-axis at point B, the area of △ OBM is calculated
10. Is there a relationship between hyperbola and graph of first order function? What's the difference between a first-order function and an inverse proportion function? Not all of them have y increasing with X or Y decreasing with X. why do we have an inverse proportion function when we have a first-order function? Can't we all use a first-order function?
11. 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,
12. 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
13. 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)
14. 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
15. Given the graph of a function, write its analytic expression
16. The figure formed by two lines leading out from one point is called angle
17. 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
18. Two from one point______ The figure formed is called angle
19. A figure formed by two straight lines drawn from a point is called an angle______ (judge right or wrong)
20. 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]