Question

HELP PLEASE!
What is the x-coordinate of the x-intercept of the line that passes through points (-5, 3) and (1, -3)?

Answer 1

y = mx + b
we know that m is the slope and b is the y intercept.
You also know y = 0 for the point it touches the x axis, because if y is anything else, your point would not be intersecting there.
Thus 0 = mx + b
0 - b = mx
(0 - b)/m = x
now m would be your slope from the 2 sets of points in your qeustion

Answer 2

or
y = mx + b....to find the x intercept, substitute 0 in for y.
The slope can be found by your numbers...
slope(m) = (y2 - y1)/(x2 - x1)
(-5,3) x1 = -5, y1 = 3
(1,-3) x = 1 , y = -3

Answer 3

thank you!!

Answer 4

your welcome :)