The variables are proportional. The constant of proportionality is 2/7.
Note slope intercept equation is
y = mx + b
where
m = slope
b = y-intercept
The price of a washing machine was decreased by 20% to £640.
1 answer:
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Let a=2018, we can rewrite the question into
substitute back a = 2018, obtained
well, there is something wrong here
substitute back a = 2018, obtained
well, there is something wrong here