If y= 3x + 7 and the slope was multiplied by -1/2 would it become steeper become less steep or slope downward

By saying the slope was multiplied by -1/2, I assume you actually mean multiply and not decreased. In the equation, the slope of the equation is 3. Therefore, if it were to be multiplied by -1/2, the new slope would be -3/2. Because the slope is now negative, the slow would be downward. I hope this helps :-)

Yes, give me a points