Which shows all the values of a that make the rational expression a = 9 a = 3 a = –9 or a = 9 a = –3 or a = 3

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula,equation,to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

The graph represents f(x)=[x]+3. what is f(-2.2)?