3x-6y=9
x=2y+3

SOMEONE HELP ME SOLVE THIS STEP BY STEP TY

Can someone tell me if this is perpendicular? !

Dange measures and finds that she can do a vertical jump that is 27.5% of her height if dange is 48 inches tall how high can she jump

If a triangle given by the matrix  [2 3 5 -1 0 2]  is dilated by a scale factor of 2, what will happen to the side lengths and angle measures of the triangle