Write the equation of the line in slope intercept form that passes through (2, -4)and (-1,2)

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.