Do these pairs of values (x and y) represent two quantities that are proportional?
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3 6
5 10
6 12
9 18

Please help need help with this

Which best describes the transformation that occurs in the graph? a) dilation b) reflection c) rotation d) translation

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Which of the following functions corresponds to the above sinusoid? a. 10 cos πx - 5 b. -5 sin x - 5 c. -10 cos πx/2 - 0.5 d. 10 sin πx - 5