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# Coordinates

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A line has a slope of $-\frac{3}{5}$ and its y-intercept is (0,18). What is its x-intercept?

Oct 20, 2021

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A line has a slope of $-\frac{3}{5}$ and its y-intercept is (0,18). What is its x-intercept?

Hello Guest!

$$f(x)=-\dfrac{3}{5}x+18=0\ |\ -18\\ -\dfrac{3}{5}x=-18\ |\ \cdot -\frac{5}{3}\\ x= \dfrac{18\cdot 5}{3}$$

$$x= 30$$

its x-intercept is 30.

!

Oct 20, 2021