In xy plane, what is y-intercept of l?
a. Slope of l is 3 times the y intercept
b. x-intercept of l is -⅓
oa e
a. Slope of l is 3 times the y intercept
b. x-intercept of l is -⅓
oa e
the equation be
y = mx + c
where
m = slope
c = y intercept
Statement 1
m=3c
substitute in the eqn
y =3cx + c
we cant solve for c
insufficient
Statement 2
x intercept is -1/3
To find x intercept
put y = 0 in the equation
0= mx + c
c = - mx
put the value of x
c= - m * -1/3
=1/3m
still we dont know the value of m
so insufficient
using both
c = 1/3 m from statement 2
and m = 3c
we cant solve for c
so insufficient
Answer is E
