Donte simplified the expression below.
4(1+3) -(8-5)
4+31-8+51
-4+81
what mistake did donte make?
o
he did not apply the distributive property correctly for 4(1 + 31).
he did not distribute the subtraction sign correctly for 8 - 5.
he added the real number and coefficient of i in 4(1 + 31).
he added the two complex numbers instead of subtracted.

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

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7