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The equation of a line is given as 3 x - 5y = 7. Find its...

Mathematics
WAEC 2021

The equation of a line is given as 3 x - 5y = 7. Find its gradient (slope)

 

  • A. \(\frac{5}{3}\).
  • B. \(\frac{3}{5}\).
  • C. \(\frac{-3}{5}\).
  • D. \(\frac{-5}{3}\).
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Correct Answer: Option B
Explanation

the form y=mx+c

where m is the gradient and c is the y-intercept.

the equation to gives 5y=3x - 7.

divide both side by 5 the coefficient of y → \(\frac{3}{5}\)x - \(\frac{7}{5}\) 

comparing this with the general equation y=mx+c,

you can see that m= the gradient= \(\frac{3}{5}\).


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