Aline that passes through the points (-4, 10) and (-1,5) can be represented by the equation y= - 5/3(x-2). which equations also represent this line? y= - 5/3 x -2, y= - 5/3 x+ 10/3, 3y= -5x + 10, 3x+15y=30, 5x+3y=10

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180