1.) y=(-3/4)x+3
Explanation: To convert this to slope-intercept form or a linear equation, we have to solve for y. To do this, I first subtracted over 3x to isolate 4y. This gave me 4y=-3x+12. Finally, I divided everything by 4 in order to completely isolate y so that it is in linear equation form, giving me my answer, y= -3/4x+3