Question

A student with a poor understanding of straight-line graphs writes down some incorrect information

next to each equation. Decide how the error might have been made and then correct the information.

X-2y=4. (Gradient=1)

Answer 1

½

Explanation:

The coefficient of x is 1 but the equation is not in the form of y = mx + b

x - 2y = 4

-2y = 4 - x

2y = x - 4

y = ½x - 2

Therefore, the gradient is ½