Mathematics
Grade9
Easy
Question
Which equation represents the line shown in the slope-intercept form.
- y = 3 x + 2
- y = 3 x - 2
Hint:
In this question, we have to find the equation of the slope intercept form. The co-ordinates of the points in the line are A(0,-2) and B(6,0). Firstly we will find the slope of the line. And then put the value in the equation of slope intercept form of co-ordinates a point and the slope to find the value of c. Further as know we have the value of both c and m, we can find the equation of the slope form.
The correct answer is:
The co-ordinates of the line given are A(0,-2) and B(6,0).
Slope of AB, m
By the slope-intercept form we know;
y = mx + c
Given,
As per the given point, we have;
y = -2 and x = 0
m = 1/3
Hence, putting the values in the above equation, we get;
-2 = 1/3 (0) + c
c = -2
Hence, the required equation will be;
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