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erastovalidia [21]
3 years ago
7

a straight line has a equation 4x + 3y = 12 . find the gradient of the line and the coordinates of the point where this line cro

sses the x-axis
Mathematics
1 answer:
Komok [63]3 years ago
4 0
4x + 3y = 12
3y = -4x + 12
y = -4/3x + 4........so the slope (or gradient) is -4/3...because in y = mx + b form, the slope(gradient) is in the m position and the y int is in the b position....so if u wanted to know the y axis, it would be (0,4)

the x intercept (where the line crosses the x axis) can be found by subbing in 0 for y in the original equation or the slope intercept equation, and solving for x.
4x + 3(0) = 12
4x = 12
x = 12/4 = 3....so the x intercept is (3,0)
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