E (6x +40)
10/18/2020
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7 Fill in the reason that justifies each step.
ZCDE and ZEDF are
Is that form a linear pair are
supplementary
supplementary
mZCDE +mZEDF = 180
a. 2
x+(6x +40) = 180
b.?
7x + 40 = 180
c.?
7x = 140
d. ?
X = 20
e. ?
D
F

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

what is the model?

step-by-step explanation:

what? that isnt a question

step-by-step explanation: