For the data in the table, does y vary directly with x? if it does, write an equation for the direct variation.

Step-by-step explanation:

Yes y varies directly with x.

From the equation of a straight line,

y = mx+c, calculating the gradient (m) after doing the plotting with the given coordinates, (m) =4/5.

Therefore the equation of the line is

y= 4/5x + c and c is the point at which the line intersected the y - axis which is roughly 15.

Therefore the equation of the line id

5y = 4x + 75.

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation: