40. if (5, y) is a solution to the equation 5x+4y-20=0, what is the value of y? alu co à cd

Hello there! The value of y is -5/4.

So, basically look at it like an ordered pair, (x, y). When we have (5, y), we have a value of x and are looking for a value of y. To do this, plug the value for x (5) into the equation and solve for y.

5x+4y-20=0

5(5)+4y-20=0

Now that you have the value for x, solve for y.

5(5)+4y-20=0 - Start by multiplying out the parenthesis.

25 + 4y - 20 = 0 - Next, combine like terms.

25 - 20 + 4y = 0

5 + 4y = 0 - Now, subtract 5 from both sides.

4y = -5 - Lastly, divide both sides by 4.

y = -5/4.

This is your final answer. I hope this helps and have a great day! :)

gregory's graph is incorrect because it shows 2 inches of growth for each week when it should show 0.75 inches of growth each week.