JAMB 1994 · UME · Q36

The equation of the line in the graph shown is

xy(0, 4)(3, 0)(0, 0)
Worked solution (try it first)
  1. The line cuts the yy-axis at (0,4)(0, 4) and the xx-axis at (3,0)(3, 0).
  2. Gradient: 0−43−0=−43\dfrac{0 - 4}{3 - 0} = -\frac43, and the yy-intercept is 4, so y=−43x+4y = -\frac43x + 4.
  3. Multiply every term by 3: 3y=−4x+123y = -4x + 12, option C.

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