What is the y intercept of this line and how did you find it?
(1,4) (6,-1)

Measures of the angle of r, 31 s (x+4) t (3x+9)

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle