The slope of a line is -\frac{3}{7} and its y-intercept is (0,18). What is its x-intercept?

Guest Feb 21, 2020

#3**0 **

Since the slope is -3/7, every time the y-value **decreases **by three, the x-value will **increase** by 7

If the start with a y-value of 18, you can make 6 decreases (of three each time) to get to the x-axis.

So, increase the original x-value (zero) 6 times: 6 x 7 = 42.

Therefore, the x-intercept will be (42,0)

geno3141 Feb 21, 2020