Pleaseee helpp answer correctly

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.

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Is this a polynomial function? i need to know asap