A line has a slope of 8/7 and its y-intercept is (0,18). What is its -intercept?
+37146 Line equation given y = 8/7 x + 18 x -axis intercept is when y = 0
0 = 8/7 x + 18 solve for x then your point is x, 0
+876 A line has a slope of 8/7 and its y-intercept is (0,18). What is its x-intercept?
$y = mx + b$
$y = \frac{8}{7}x + 18$
When $y=0,$ the result is the x-intercept.
$0 = \frac{8}{7}x + 18$
$0 = \frac{4}{7}x + 9$
$0 = 4x + 63$
$4x = -63$
$x = - \frac{63}{4} = -15 \frac{3}{4}$
The x-intercept is $\boxed{(-15 \frac{3}{4}, 0)}$
