Find y if the line through the points (-4,y) and (8,2) has a slope of -1/3

Rose drew a regression line for this paired data set. her line passed through (1, 2) and (3, 5) . what is the equation of rose's regression line?

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

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