HELP ASAP DUE SOONNN

y = 1/2x - 3

Step-by-step explanation:

y = mx + b

m is the slope and b is the y-intercept

To find the slope, pick 2 of the points that are the nearest to each other and are already highlighted. The distance of those two points is 2 units to the left and 1 unit up. So y/x is how u would write your slope, y is the up and down and x is the left and right. Plug in the numbers y/x = 1/2. 1/2 is your slope.

b is the y-intercept. The intercept is where the line goes through on the y-axis. In this case it's going through -3, so that's you y-intercept.

Plug the numbers into the equation:

y = mx + b -> y = 1/2x - 3

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15