
Concept explainers
Graph the equation by using x and y − intercept.

Answer to Problem 24PPS
x and y intercepts are x= − 1.667 and y = 5
Explanation of Solution
Given:
The equation: 5−y=−3x
Concept Used:
The x -intercepts are where the graph crosses the x -axis, and the y -intercepts are where the graph crosses the y -axis.
Then, algebraically,
- an x -intercept is a point on the graph where y is zero, and
- a y -intercept is a point on the graph where x is zero.
More specifically,
- an x -intercept is a point in the equation where the y -value is zero, and
- a y -intercept is a point in the equation where the x -value is zero.
Calculation:
The equation: 5−y=−3x
Find the x − intercept, plug in y = 0 in the equation.
5−y=−3x5−0=−3x [ plug in y =0 ]5=−3x [ Subtract 2x from both sides ]5−3 = −3x−3 [ Divide each side by −2 ]x=−53 = − 1.667x=−1.667 x − Intercept: x= − 1.667
Find the y − intercept, plug in x = 0 in the equation
5−y=−3x5−y=−3 · 0 [ plug in x =0 ]5−y=05−5−y=−5 [ Subtract 5 from both sides ]−y=−5−y−1 = −5−1 [ Divide each side by −1 ]y=5 y − Intercept: y = 5
Graph the line 5−y=−3x with x and y intercepts points are (− 1.667, 0) and (0, 5)
Thus, x and y intercepts are x = − 1.667 and y = 5
Chapter 3 Solutions
Algebra 1
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