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18 votes
18 votes
Graph y equals 4 take away 3 / 5 x and identify the x intercept

User Chwi
by
3.2k points

1 Answer

28 votes
28 votes

Given:


y=4-(3)/(5)x

The x-intercept is the point where the line crosses the x-axis.

At x-intercept, the y-coordinate is always zero.

To find the x-intercept, set y=0 and solve for x.

Thus, we have:


0=4-(3)/(5)x

Multiply through by 5 to eliminate the fraction:


\begin{gathered} 0(5)=4(5)-(3x)/(5)\ast5 \\ \\ 0=20-3x \end{gathered}

Subtract 20 from both sides:


\begin{gathered} 0-20=20-20-3x \\ \\ -20\text{ = -3x} \end{gathered}

Divide both sides by -3:


\begin{gathered} (-20)/(-3)=(-3x)/(-3) \\ \\ (20)/(3)=x \end{gathered}

Therefore the x-intercept is:


(20)/(3)

ANSWER:


(20)/(3)

User Eli Burke
by
2.6k points