Slope intercept form = Y = Mx + B
15 = -3y + 21x
3y = 21x - 15
Y = 21/3 X - 15/3
Y = 7x - 5 = SI Form
For a line you would draw a straight line with arrows on each end and for a ray you would draw a straight line with an arrow on only one end (depends on which way ray is pointing)
:)
Parallelogram has two pairs of parallel sides. Obviously the left and lights are well and grandpa parallel because they’ll give me other thing that marks them is that they both have the same one that means that the sides that they intersect, the top and the bottom, or also parallel because they are the same distance
The angels in a triangle should be 180° all
85+64+30=179<180
so we should add 1° to the first one
the angels would be 86 64 30