Yo not gonna lie i fricking hate math help pls

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Click the arrows to advance or review slides. mapping carbohydrates to food carbohydrates (grams) 15 food (quantity) bread (1 slice) pasta (1/3 cup) apple (1 medium) mashed potatoes (1/2 cup) broccoli (1/2 cup) carrots (1/2 cup) milk (1 cup) yogurt (6 oz.) 12 12 is jennifer's relation a function? yes no f 1 of 2 → jennifer figure out the difference between a function and a relation by answering the questions about her food choices

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)