The scores on a quiz are normally distributed. The mean of the quiz is 88 and the standard deviation is 2.6. By using the Empirical rule, what scores fall 2 standard deviations from the mean?

86.4 and 90.6

85.4 and 88.6

86 and 90

85.4 and 90.6

both graphs increase on their domain

neither graph has a y-intercept

step-by-step explanation:

the following points can be visualized easily from the graph

the equation of the parallel line would be y = 2x + 9

step-by-step explanation:

to start we need to find the slope of the original line. we can do that by looking at the coefficient of x, which is 2

since the slope of the original line is 2 and parallel lines have the same slope, we know the new line will also have 2 slope. now we can use that along with the point given in point-slope form to get the find equation.

y - y1 = m(x - x1)

y - 5 = 2(x + 2)

y - 5 = 2x + 4

y = 2x + 9

it would be r^2 - 2rs +s^2

assuming   you mean to square it