The variable y has a proportional relationship with x as suggested by the graph. Use the graph to find the constant of proportionality. 0 1 2 3 4 5 6 7 8 9 10 0 38 76 114 152 190 228 266 304 342 380 x y A horizontal x-axis is labeled from 0 to 10. A vertical y-axis is labeled from 0 to 380. A line rises from left to right and passes through the origin, (0, 0), and (1, 38). The constant of proportionality is nothing. (Simplify your answer.)

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step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form

step-by-step explanation:

because it just is