2020
Mathematics
67ca00ce0c643c71d77dee1f
The equation of the line in the graph is
A.
3y = 3x + 12
B.
3y = 3x + 12
C.
3y = -4x + 12
D.
3y = -4x + 9
Correct Answer: 3y = -4x + 12
Explanation
Gradient of line = Change in y/Change in x = (y2 −Y1)/(x2 − x1) y2 = 01 Y1 = 4 x2 = 3 and x1 = 0 (y2 − y1 )/(x2 − x1 ) = (0−4)/(3 − 0) = −4/3 Equation of straight line y = mx + c Where m = gradient and c = y intercept = 4 y = -4/3x + 4 multiply through by 3 3y = -4x + 12
Gradient of line = Change in y/Change in x = (y2 −Y1)/(x2 − x1) y2 = 01 Y1 = 4 x2 = 3 and x1 = 0 (y2 − y1 )/(x2 − x1 ) = (0−4)/(3 − 0) = −4/3 Equation of straight line y = mx + c Where m = gradient and c = y intercept = 4 y = -4/3x + 4 multiply through by 3 3y = -4x + 12THIS WEEK's
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