Triangle ABC and triangle DEF are similar.
Which proportion must be true?

If triangles ABC and triangle DEF are similar, their corresponding angles must be congruent and their corresponding sides must have a common ratio.

step-by-step explanation:

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3