Answer:
y=8x or y=8x + 0
Step-by-step explanation:
you need to take 2 points on the lina and make a triangle i used (-2,16) and (0,0).
The equation for gradient is
and the line touches the Y-axis at 0(that is your y-intercept)
The constant of proportionality is k = y/x.....k = 40/200 = 1/5
y = mx + b
slope(m) = 1/5
(200,40)...x = 200 and y = 40
now we sub...we r looking for b, the y int
40 = 1/5(200) + b
40 = 40 + b
40 - 40 = b
0 = b
so ur equation is : y = 1/5x
if pop star earned 800
800 = 1/5x
800 * 5 = x
4000 = x
W= 3 because 5 times 3 equals 15.
The equation is incorrect, is that what you wanted to find out?