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

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

It can be seen from the meaning of the title
The slope of the equation k = [0 - (- 1)] / (2-0) = 1 / 2
If a straight line passes through (2,0), (0, - 1), then there can be
y-(-1)=1/2(x-2)
The sorted X / 2-y-2 = 0
The first is the slope of the equation
The solution is as follows: (we know that the equation passes through two points (x1, Y1) (X2, Y2), or we know the angle a between the straight line and the x-axis)
K=(Y2-Y1)/(X2-X1)=tanA

The linear equation with a slope of - 4 and an intercept of 7 on the y-axis is______ ．

The slope of the straight line is - 4, and the intercept on the Y axis is 7. Using the oblique section formula, we can get y = - 4x + 7. So the answer is: y = - 4x + 7