Thang T. answered • 7d

Math and Science Tutor

Slope intercept form is y = mx +b.

Whenever you have two points, you can acutally graph the two point and get you y-intercpet or b, and you slope, m, from the graph itself.

You can also find the slope from these two point using the slope forumals, m = (y2 - y1)/(x2 - x1), then you would need a point-slope formula to put the whole thing into slope incercept form.

E.I.

m = (42-19)/(8-3)

= 23/5

point-slope formula; y - y1 = m(x- x1), here, you can use any point

y - 42 = 23/5 (x - 8)

y - 42 = 23x/5 - 184/5, after you distribute in,

y = (23/5)x - 184/5 + 42

y = (23/5)x + (26/5), after you add 42 to a negative 184/5, which 26/5

Final answer is y = (23/5)x + 26/5