The greater density to measure by having a mass of 2cm or 3cm
Answer:
Line does not represent direct variation.
Step-by-step explanation:
If the line goes thru the origin, it represents direct variation. Otherwise it does not.
Start by finding the slope of this line:
As we move from (-4,3) to (4,3), x increases by 8 but y does not change. Thus, the slope is 0/8, or just 0. Thus, the equation of this line is y = 3, which does NOT go thru the origin; thus, the points given do NOT represent direct variation.
She is correct because a negative subtracted by a negative is positive.
The answer for -2.5x-10=40 would be:
x = - 20.
0.45 = 45/100
45/100 = 9/20 (Simplified)
