I guess the only way to use subtraction is to take the total area of the grid and subtract it by the total area around the figure. So it since it is a 10 by 10 grid, it would be 100 (since 10*10=100) minus the area around the shape.
Let
A-----> the point (0.25,1)
B-----> the point (0.50,1.75)
we know that
the equation that represents the linear function is the equation of a line
so
step 1
find the slope m with the points A and B
m=(y2-y1)/(x2-x1)-----> m=(1.75-1)/(0.50-0.25)---> m=0.75/0.25--> m=3
step 2
with m=3 and point A (0.25,1)
find the equation of a line
y-y1=m*(x-x1)-------> y-1=3*(x-0.25)----> y=3x-0.75+1----> y=3x+0.25
the answer isy=3x+0.25
see the attached figure
Where are your choices? Is there more?
C, D, E, and G are FOUR points.
Answer: 0.3 kg
Step-by-step explanation:
£5 = 500p
500p ÷ 5 = 100
100 x 3 = 300 grams
300 ÷ 1000 = 0.3 kg
Hope this helps :)