Write the standard form of the equation of the line passing through the point (1, 5) and perpendicular to the line
-3x - 4y = 4.

y=4/3x+3.75

Step-by-step explanation:

rearrange:4y=-3x-4

simplify(divide by 4 to get y on its own): y=-3/4x-1

However we need to find the gradient parallel to this line so we find the negative reciprocal: y=4/3x-1

Now we have the gradient we incert the y and x values from (1,5): 5=(4/3)x1+c

To find c we divide by. 4/3: 5÷4/3 = 3.75

so y=4/3x+3.75

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: