On a graph, go up 7 units and to the right 2 units from the origin
K = 7 since it is literally the same in terms of slope. Its just the constant that changes and therefore it is equal to the units mentioned.
B. 20x and .8x because they have the same variable
You need to find the least common denominator first which is 4. 3 3/4 can stay the same but you must have like denominators to add so change 1 1/2 to 1 2/4 by multiplying by 2/2. You know have like denominators and you can add whole numbers first 3+1=4 and then the fractions 3/4+2/4= 5/4 which is also 1 1/4. Now you add 4 so your answer is 5 1/4