Answer:
Step-by-step explanation:
The slope-intercept form is
y
=
m
x
+
b
, where
is the slope and
is the y-intercept.
Find the values of
and
using the form
.
5
0
The slope of the line is the value of
, and the y-intercept is the value of
Slope:
y-intercept:
C
add them
x = 30
A triangle's angles add up to 180
Also, angles on a straight line add up to 180
180-100 = 80
80+70=150
180-150=30