In isosceles triangle XYZ, angle X=117°. calculate angleZ
1 answer:
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Answer:
y = - 2x + 6
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m =
with (x₁, y₁ ) = (1, 4 ) and (x₂, y₂ ) = (2, 2 )
m = =
= - 2 , then
y = - 2x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (2, 2 ) , then
2 = - 4 + c ⇒ c = 2 + 4 = 6
y = - 2x + 6 ← equation of line
see explanation below
(1) ×
=
= 0.2
(2) ×
=
= 0.24
(3) 2 = 2 +
= 2.75
(4) 3 = 3 + 0.9 = 3.9
(5) 1.25 = 1 =
(6) 3.29 = 3 =
(7) 0.65 = =
in simplest form
(8) 5.6 = 5 = 5
=
(9) he is incorrect
×
=
= 0.6 ≠ 3.5