Which of the following has a graph that is a straight line? (4 points)

Select one:
a. Equation 1: y = 2x + 7
b. Equation 2: y^2 = x − 1
c. Equation 3: y = 2x^2 + 4
d. Equation 4: y = 3x^3

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

Which of the following is another way to express the difference between -5 and 8?