What is the constant of variation, k, of the line y = kx through (3,18) and (5,30)?

Which graph represents an even function?

One integer is 5 more than another. their product is 104. find the integers

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.